Category Archives: Online gaming

Screenagers in love: Adolescent screen time, content, and context

In 1999, the American Academy of Pediatrics (AAP) advocated the ‘2×2’ screen time guidelines to parents that their children should be restricted to no more than 2 hours of screen time a day and that children under 2 years of age should not be exposed to any screen time at all. Not only is this unworkable in today’s multi-media world but the guidelines are not based on scientific evidence. Thankfully, the AAP have revised their guidelines in the light of how today’s children actually engage with screen-based interactive technologies. For me, the issue is not about the amount of screen time but is about the content and the context of screen use. I have three ‘screenagers’ (i.e., children often referred to as ‘digital natives’ who have never known a world without the internet, mobile phones and interactive television) who all – like me – spend a disproportionate amount of their everyday lives on front of a screen for both work/educational and leisure purposes. Engaging in a lot of screen-based activities is not inherently negative – it’s simply a case of doing things differently than we did 20 years ago.

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One online activity that has received a lot of criticism in the media is the playing of online videogames. However there is now a wealth of research which shows that video games can be put to educational and therapeutic uses, as well as many studies which reveal how playing video games can improve reaction times and hand-eye co-ordination. Their interactivity can stimulate learning, allowing individuals to experience novelty, curiosity and challenge that stimulates learning. Although I have published many studies concerning online gaming addiction, there is little empirical evidence that moderate gaming has any negative effects whatsoever. In fact, many excessive players experience detrimental effects.

Over the past 15 years I have spent time researching the excessive playing of online videogames like Everquest and World of Warcraft (WoW). Online gaming involves multiple reinforcements in that different features might be differently rewarding to different people. In video games more generally, the rewards might be intrinsic (e.g. improving your highest score, beating your friend’s high score, getting your name on the “hall of fame”, mastering the game) or extrinsic (e.g. peer admiration).

In online gaming, there is no end to the game and there is the potential for gamers to play endlessly. This can be immensely rewarding and psychologically engrossing. For a small minority of people, this may lead to addiction where online gaming compromises everything else in their lives. However, playing excessively doesn’t necessarily make someone an addict. A few years ago in the International Journal of Mental Health and Addiction, I published two case study accounts of two males who claimed that they were gaming for up to 80 hours a week. They were behaviourally identical in terms of their game playing, but very different in terms of their psychological motivation to play.

The first case was an unemployed single 21-year old male. His favourite online game was World of Warcraft and that since leaving university he had spent an average of 10 to 14 hours a day playing WoW. He claimed that WoW had a positive influence in his life and that most of his social life was online and that it increased his self-esteem. He also argued that he had no other commitments and that he had the time and the flexibility to play WoW for long stretches. Gaming provided a daily routine when there was little else going on. There were no negative detrimental effects in his life. When he got a job and a girlfriend, his playing all but stopped.

The second case was 38-year old male, a financial accountant, married and had two children. He told me that over the previous 18 months, his online playing of Everquest had gone from about 3-4 hours of playing every evening to playing up to 14 hours a day. He claimed that his relationship was breaking down, that he was spending little time with his children, and that he constantly rang in sick to work so that he could spend the day playing online games. He had tried to quit playing on a number of occasions but could not go more than a few days before he experienced “an irresistible urge” to play again – even when his wife threatened to leave him.

Giving up online gaming was worse than giving up smoking and that he was “extremely moody, anxious, depressed and irritable” if he was unable to play online. Things got even worse. He was fired from his job for being unreliable and unproductive (although his employers were totally unaware of his gaming behaviour). As a result of losing his job, his wife also left him. This led to him “playing all day, every day”. It was a vicious circle in that his excessive online gaming was causing all his problems yet the only way he felt he could alleviate his mood state and forget about all of life’s stresses was to play online games even more.

I argued that only the second man appeared to be genuinely addicted to online gaming but that the first man wasn’t. I based this on the context and consequences of his excessive play. Online gaming addiction should be characterized by the extent to which excessive gaming impacts negatively on other areas of the gamers’ lives rather than the amount of time spent playing. For me, an activity cannot be described as an addiction if there are few (or no) negative consequences in the player’s life even if the gamer is playing up to 14 hours a day. The difference between a healthy enthusiasm and an addiction is that healthy enthusiasms add to life, addictions take away from it.

Every week I receive emails from parents claiming that their sons are addicted to playing online games and that their daughters are addicted to social media. When I ask them why they think this is the case, they almost all reply “because they spend most of their leisure time in front of a screen”. This is simply a case of parents pathologising their children’s behaviour because they think what they are doing is “a waste of time”. I always ask parents the same three things in relation to their child’s screen use. Does it affect their schoolwork? Does it affect their physical education? Does it affect their peer development and interaction? Usually parents say that none of these things are affected so if that is the case, there is little to worry about when it comes to screen time. Parents also have to bear in mind that this is how today’s children live their lives. Parents need to realise that excessive screen time doesn’t always have negative consequences and that the content and context of their child’s screen use is more important than the amount of screen time.

(Please note: This article is an extended version of an article that was originally published by the London School of Economics’ Media Policy Project)

Dr Mark Griffiths, Professor of Behavioural Addiction, International Gaming Research Unit, Nottingham Trent University, Nottingham, UK

Further reading

Griffiths, M.D. (2010). Online video gaming: What should educational psychologists know? Educational Psychology in Practice, 26(1), 35-40.

Griffiths, M.D. (2010). The role of context in online gaming excess and addiction: Some case study evidence. International Journal of Mental Health and Addiction, 8, 119-125.

Griffiths, M.D. (2013). Adolescent gambling via social networking sites: A brief overview. Education and Health, 31, 84-87.

Griffiths, M.D. (2013) Social networking addiction: Emerging themes and issues. Journal of Addiction Research and Therapy, 4: e118. doi: 10.4172/2155-6105.1000e118.

Griffiths, M.D. (2014). Child and adolescent social gaming: What are the issues of concern? Education and Health, 32, 9-12.

Griffiths, M.D. (2014). Gaming addiction in adolescence (revisited). Education and Health, 32, 125-129.

Griffiths, M.D., Kuss, D.J. & King, D.L. (2012). Video game addiction: Past, present and future. Current Psychiatry Reviews, 8, 308-318.

Griffiths, M.D., Kuss, D.J. & Demetrovics, Z. (2014). Social networking addiction: An overview of preliminary findings. In K. Rosenberg & L. Feder (Eds.), Behavioral Addictions: Criteria, Evidence and Treatment (pp.119-141). New York: Elsevier.

Kuss, D.J. & Griffiths, M.D. (2011). Online social networking and addiction: A literature review of empirical research. International Journal of Environmental and Public Health, 8, 3528-3552.

Kuss, D.J. & Griffiths, M.D. (2012). Online gaming addiction in adolescence: A literature review of empirical research. Journal of Behavioral Addictions, 1, 3-22.

Kuss, D.J. & Griffiths, M.D. (2012). Internet gaming addiction: A systematic review. International Journal of Mental Health and Addiction, 10, 278-296.

Lopez-Fernandez, O., Honrubia-Serrano, M.L., Baguley, T. & Griffiths, M.D. (2014). Pathological video game playing in Spanish and British adolescents: Towards the Internet Gaming Disorder symptomatology. Computers in Human Behavior, 41, 304–312.

Pápay, O., Urbán, R., Griffiths, M.D., Nagygyörgy, K., Farkas, J. Kökönyei, G., Felvinczi, K., Oláh, A., Elekes, Z., Demetrovics, Z. (2013). Psychometric properties of the Problematic Online Gaming Questionnaire Short-Form (POGQ-SF) and prevalence of problematic online gaming in a national sample of adolescents. Cyberpsychology, Behavior, and Social Networking, 16, 340-348.

Tubular hells: A brief look at ‘addiction’ to watching YouTube videos

 

A few days ago, I unexpectedly found my research on internet addiction being cited in a news article by Paula Gaita on compulsive viewing of YouTube videos (‘Does compulsive YouTube viewing qualify as addiction?‘). The article was actually reporting a case study from a different news article published by PBS NewsHour by science correspondent Lesley McClurg (‘After compulsively watching YouTube, teenage girl lands in rehab for digital addiction’). As Gaita reported:

“The story profiles a middle school student whose obsessive viewing of YouTube content led to extreme behavior changes and eventually, depression and a suicide attempt. The student finds support through therapy at an addiction recovery center…The student in question is a young girl named Olivia who felt at odds with the ‘popular’ kids at her Oakland area school. She began watching YouTube videos after hearing that it was a socially acceptable thing to do… Her viewing habits soon took the place of sleep, which impacted her energy and mood. Her grades began to falter, and external problems within her house – arguments between her parents and the death of her grandmother – led to depression and an admission of wanting to hang herself. Her parents took her to a psychiatric hospital, where she stayed for a week under suicide watch, but her self-harming compulsion continued after her release. She began viewing videos about how to commit suicide, which led to an attempt to overdose on Tylenol[Note: The name of the woman – Olivia – was a pseudonym].

McClurg interviewed Olivia’s mother for the PBS article and it was reported that Olivia went from being a “bubbly daughter…hanging out with a few close friends after school” to “isolating in her room for hours at a time”. Olivia’s mother also claimed that her daughter had always been kind of a nerd, a straight. A student who sang in a competitive choir. But she desperately wanted to be popular, and the cool kids talked a lot about their latest YouTube favorites”. According to news reports, all Olivia would do was to watch video after video for hours and hours on end and developed sleeping problems. Over time, the videos being watched focused on fighting girls and other videos featuring violence.

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The news story claimed that Olivia was “diagnosed with depression that led to compulsive internet use”. When Olivia went back home she was still feeling suicidal and then spent hours watching YouTube videos on how to commit suicide (and it’s where she got the idea for overdosing on Tylenol tablets).

After a couple of spells in hospital, Olivia’s parents took her to a Californian centre specialising in addiction recovery (called ‘Paradigm’ in San Rafael). The psychologist running the Paradigm clinic (Jeff Nalin) claimed Olivia’s problem was “not uncommon” among clients attending the clinic. Nalin believes (as I do and have pointed out in my own writings) that treating online addictions is not about abstinence but about getting the behaviour under control but developing skills to deal with the problematic behaviour. He was quoted as saying:

“I describe a lot of the kids that we see as having just stuck a cork in the volcano. Underneath there’s this rumbling going on, but it just rumbles and rumbles until it blows. And it blows with the emergence of a depression or it emerges with a suicide attempt…The best analogy is when you have something like an eating disorder. You cannot be clean and sober from food. So, you have to learn the skills to deal with it”.

The story by Gaita asked the question of whether compulsive use of watching YouTube could be called a genuine addiction (and that’s where my views based on my own research were used). I noted that addiction to the internet may be a symptom of another addiction, rather than an addiction unto itself. For instance, people addicted to online gambling are gambling addicts, not internet addicts. An individual addicted to online gaming or online shopping are addicted to gaming or shopping not to the internet.

An individual may be addicted to the activities one can do online and is not unlike saying that an alcoholic is not addicted to a bottle, but to what’s in it. I have gone on record many times saying that I believe anything can be addictive as long there are continuous rewards in place (i.e., constant reinforcement). Therefore, it’s not impossible for someone to become addicted to watching YouTube videos but the number of genuine cases of addiction are likely to be few and far between. Watching video after video is conceptually no different from binge watching specific television series or television addiction itself (topics that I have examined in previous blogs).

I ought to end by saying that some of my own research studies on internet addiction (particularly those co-written with Dr. Attila Szabo and Dr. Halley Pontes and published in the Journal of Behavioral Addictions and Addictive Behaviors Reports – see ‘Further reading’ below) have examined the preferred applications by those addicted to the internet, and that the watching of videos online is one of the activities that has a high association with internet addiction (along with such activities such as social networking and online gaming). Although we never asked participants to specify which channel they watched the videos, it’s fair to assume that many of our participants will have watched them on YouTube), and (as the Camelot lottery advert once said) maybe, just maybe, a few of those participants may have had an addiction to watching YouTube videos.

Dr Mark Griffiths, Professor of Gambling Studies, International Gaming Research Unit, Nottingham Trent University, Nottingham, UK

Further reading

Gaita, P. (2017). Does compulsive YouTube viewing qualify as addiction? The Fix, May 19. Located at: https://www.thefix.com/does-compulsive-youtube-viewing-qualify-addiction

Griffiths, M.D. (2000). Internet addiction – Time to be taken seriously? Addiction Research, 8, 413-418.

Griffiths, M.D., Kuss, D.J., Billieux J. & Pontes, H.M. (2016). The evolution of internet addiction: A global perspective. Addictive Behaviors, 53, 193–195.

Griffiths, M.D. & Pontes, H.M. (2014). Internet addiction disorder and internet gaming disorder are not the same. Journal of Addiction Research and Therapy, 5: e124. doi:10.4172/2155-6105.1000e124.

Griffiths M.D. & Szabo, A. (2014). Is excessive online usage a function of medium or activity? An empirical pilot study. Journal of Behavioral Addictions, 3, 74-77.

Kuss, D.J. & Griffiths, M.D. (2015). Internet Addiction in Psychotherapy. Basingstoke: Palgrave Macmillan.

Kuss, D.J., Griffiths, M.D. & Binder, J. (2013). Internet addiction in students: Prevalence and risk factors. Computers in Human Behavior, 29, 959-966.

Kuss, D.J., Griffiths, M.D., Karila, L. & Billieux, J. (2014). Internet addiction: A systematic review of epidemiological research for the last decade. Current Pharmaceutical Design, 20, 4026-4052.

Kuss, D.J., van Rooij, A.J., Shorter, G.W., Griffiths, M.D. & van de Mheen, D. (2013). Internet addiction in adolescents: Prevalence and risk factors. Computers in Human Behavior, 29, 1987-1996.

McClurg, L. (2017). After compulsively watching YouTube, teenage girl lands in rehab for ‘digital addiction’. PBS Newshour, May 16. Located at: http://www.pbs.org/newshour/rundown/compulsively-watching-youtube-teenage-girl-lands-rehab-digital-addiction/

Pontes, H.M., Kuss, D.J. & Griffiths, M.D. (2015). The clinical psychology of Internet addiction: A review of its conceptualization, prevalence, neuronal processes, and implications for treatment. Neuroscience and Neuroeconomics, 4, 11-23.

Pontes, H.M., Szabo, A. & Griffiths, M.D. (2015). The impact of Internet-based specific activities on the perceptions of Internet Addiction, Quality of Life, and excessive usage: A cross-sectional study. Addictive Behaviors Reports, 1, 19-25.

Widyanto, L. & Griffiths, M.D. (2006). Internet addiction: A critical review. International Journal of Mental Health and Addiction, 4, 31-51.

Games without frontiers: A brief look at the psychology of play

In a previous blog I examined my favourite board game (Scrabble) and the extent to which someone could become addicted to it. Today’s blog takes a broader look at the psychology of play more generally. Arguably, many of the topics that I research involve the psychology of playing games with video games and gambling games being my two most obvious areas of interest.

It’s been argued by myself (and others) that the ritualized play of several childhood games provides ‘training’ in the acquisition of gambling behaviour and that some games are pre-cursors to actual gambling (e.g., playing marbles, card flipping, etc.). Some authors (such as Igor Kusyszyn) hold the view that gambling is in itself ‘adult play’. Unsurprisingly, Freud was one of the first people to concentrate on the ‘functions’ of play and concluded that play in all its varieties (a) provides a wish-fulfilment, (b) leads to conflict reduction, (c) provides temporary leave of absence from reality, and (d) brings about a change from the passive to the active.

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Since Freud, most psychologists have concentrated on the idea of ‘conflict reduction’ and in doing so have ignored his other three postulations. A more modern approach in the 1970s by Mihalyi Czikszentmihalyi asserted that during play a person can “concentrate on a limited stimulus field, in which he or she can use skills to meet clear demands, thereby forgetting his or her own problems and separate identity” (and provides one of the reasons that a small minority of people can develop problems playing games). Seminal research on the sociology of play by Roger Caillois states notes that play is a “free and voluntary activity”, “a source of joy and amusement” and “bounded by precise limits of time and space” whereas Erving Goffman views it as a “world building activity”.

Games provide the opportunity to prove one’s superiority, the desire to challenge and overcome an obstacle, and a medium by which to test one’s skill, endurance and ingenuity. Games, unlike some activities (including life itself!), tell us whether we have won or lost. As observed by James Smith and Vicki Abt in the 1980s:

“…in the context of a competitive and materialistic culture that has become increasingly regimented and standardized with little room for individual creativity and personal achievement, games (including gambling) offer the illusion of control over destiny and circumstance”.

Perhaps the best categorisation of game types was formulated by Roger Caillois who listed four classifications – agon (competition), alea (chance), mimicry (simulation), and ilinx (vertigo). In the context of games involving gambling, alea and agon are crucial in that they offer a combination of skill, chance and luck. As was previously asserted, most people desire opportunities to test their strength and skill against an adversary, and those games which offer a component of skill or talent combined with luck and chance provide the most favourable conditions. This is particularly prevalent in males who are deemed ‘masculine’ if during the socialization process they show (socially) important traits such as courage, independence, and bravery.

According to Caillois, play is “an occasion of pure waste: waste of time, energy, ingenuity, skill, and often of money” and is a “free and voluntary activity that occurs in a pure space, isolated and protected from the rest of life”. According to Caillois, play is best described by six core characteristics:

  • It is free, or not obligatory.
  • It is separate (from the routine of life) occupying its own time and space.
  • It is uncertain, so that the results of play cannot be pre-determined and so that the player’s initiative is involved.
  • It is unproductive in that it creates no wealth and ends as it begins.
  • It is governed by rules that suspend ordinary laws and behaviours and that must be followed by players.
  • It involves make-believe that confirms for players the existence of imagined realities that may be set against ‘real life’.

Back in 2000, I published an article on the psychology of games in Psychology Review and what makes a good game. I noted that:

  • All good games are relatively easy to play but can take a lifetime to become truly adept. In short, there will always room for improvement.
  • For games of any complexity there must be a bibliography that people can reference and consult. Without books and magazines to instruct and provide information there will be no development and the activity will die.
  • There needs to be competitions and tournaments. Without somewhere to play (and likeminded people to play with) there will be little development within the field over long periods of time.
  • Finally – and very much a sign of the times – no leisure activity can succeed today without corporate sponsorship of some kind.

I was recently interviewed by Lucy Orr for an article on board games for The Register – particularly about the psychology of winning. For instance, why is winning so important? I responded to Orr by pointing out that winning makes us feel good both psychologically and physiologically. Winning something – especially if it is a result of something skilful rather than by chance – can feel even better (unless the chance winning is something life changing like winning the lottery). Winning something using your own skill can demand respect from other competitors and brings about esteem (that can feed into one’s own self-esteem). Winning can be a validation that what you are doing is worthwhile. Other parts of my interview were not used.

I was asked whether beating other people makes winning more rewarding? Of course it does. Any time we engage in a behaviour that feels good we want to do it again (and again). Winning can be reinforcing on many different levels. There may be financial rewards, social rewards (peer praise, admiration and respect from others), psychological rewards (feeling better about oneself and feeling that the activity is a life-affirming and life-enhancing activity that feeds into self-esteem), and physiological rewards (increases in adrenaline and serotonin that trigger dopamine and makes us feel happy).

For some people, winning can become addictive. You can’t become addicted to something unless you are constantly reinforced and rewarded for engaging in the behaviour, and (as mentioned above) there are many different types of rewards (e.g., financial, social, psychological and physiological). Any (or all of these) could lead to repetitive and habitual behaviour and in a small minority of cases be addictive. However, as I have noted in a number of my papers, doing something to excess is not addiction. The difference between a healthy excessive enthusiasm and an addiction is that excessive enthusiasms add to life and addictions take away from it. For most people, winning behaviour – particularly in the context of playing board games – will be highly rewarding without being in any way problematic

Dr. Mark Griffiths, Professor of Behavioural Addiction, International Gaming Research Unit, Nottingham Trent University, Nottingham, UK

Further reading

Brown, J. (2011). Scrabble addict. Sabotage Times, May 16. Located at: http://sabotagetimes.com/life/scrabble-addict/

Caillois, R. (1961). Man, play and games. Paris: Simon and Schuster.

Csikszentmihalyi, M. (1976). Play and intrinsic rewards. Journal of Humanistic Psychology, 16, 41-63.

Goffman, E. (1967). Interaction Ritual: Essays on face-to-face behavior. Garden City, New York: Doubleday Anchor.

Griffiths, M.D. (2000). The psychology of games. Psychology Review, 7(2), 24-26.

Griffiths, M.D.  (2005). A ‘components’ model of addiction within a biopsychosocial framework. Journal of Substance Use, 10, 191-197.

Griffiths, M.D. (2010). The role of context in online gaming excess and addiction: Some case study evidence. International Journal of Mental Health and Addiction, 8, 119-125.

Kusyszyn, I. (1984). The psychology of gambling. Annals of American Academy of Political and Social Sciences, 474, 133-145.

Orr, L. (2016). Winner! Crush your loved ones at Connect Four this Christmas. The Register, December 16. Located at: http://www.theregister.co.uk/2016/12/15/beating_your_family_and_winning_this_christmas/

Smith, J. F. & Abt, V. (1984). Gambling as play Annals of the American Academy of Political and Social Sciences, 474, 122-132.

Walsh, J. (2004). Scrabble addicts. The Independent, October 9. Located at: http://www.independent.co.uk/news/uk/this-britain/scrabble-addicts-535160.html

A diction for addiction: A brief overview of our papers at the 2017 International Conference on Behavioral Addictions

This week I attended (and gave one of the keynote papers at) the fourth International Conference on Behavioral Addictions in Haifa (Israel). It was a great conference and I was accompanied by five of my colleagues from Nottingham Trent University all of who were also giving papers. All of the conference abstracts have just been published in the latest issue of the Journal of Behavioral Addictions (reprinted below in today’s blog) and if you would like copies of the presentations then do get in touch with me.

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Griffiths, M.D. (2017). Behavioural tracking in gambling: Implications for responsible gambling, player protection, and harm minimization. Journal of Behavioral Addictions, 6 (Supplement 1), 2.

  • Social responsibility, responsible gambling, player protection, and harm minimization in gambling have become major issues for both researchers in the gambling studies field and the gaming industry. This has been coupled with the rise of behavioural tracking technologies that allow companies to track every behavioural decision and action made by gamblers on online gambling sites, slot machines, and/or any type of gambling that utilizes player cards. This paper has a number of distinct but related aims including: (i) a brief overview of behavioural tracking technologies accompanied by a critique of both advantages and disadvantages of such technologies for both the gaming industry and researchers; (ii) results from a series of studies carried out using behavioural tracking (particularly in relation to data concerning the use of social responsibility initiatives such as limit setting, pop-up messaging, and behavioural feedback); and (c) a brief overview of the behavioural tracking tool mentor that provides detailed help and feedback to players based on their actual gambling behaviour.

Calado, F., Alexandre, J. & Griffiths, M.D. (2017). Youth problem gambling: A cross-cultural study between Portuguese and English youth. Journal of Behavioral Addictions, 6 (Supplement 1), 7.

  • Background and aims: In spite of age prohibitions, most re- search suggests that a large proportion of adolescents engage in gambling, with a rate of problem gambling significantly higher than adults. There is some evidence suggesting that there are some cultural variables that might explain the development of gambling behaviours among this age group. However, cross­cultural studies on this field are generally lacking. This study aimed to test a model in which individual and family variables are integrated into a single perspective as predictors of youth gambling behaviour, in two different contexts (i.e., Portugal and England). Methods: A total of 1,137 adolescents and young adults (552 Portuguese and 585 English) were surveyed on the measures of problem gambling, gambling frequency, sensation seeking, parental attachment, and cognitive distortions. Results: The results of this study revealed that in both Portuguese and English youth, the most played gambling activities were scratch cards, sports betting, and lotteries. With regard to problem gambling prevalence, English youth showed a higher prevalence of problem gambling. The findings of this study also revealed that sensation seeking was a common predictor in both samples. However, there were some differences on the other predictors be- tween the two samples. Conclusions: The findings of this study suggest that youth problem gambling and its risk factors appear to be influenced by the cultural context and highlights the need to conduct more cross-cultural studies on this field.

Demetrovics, Z., Richman, M., Hende, B., Blum, K., Griffiths,
M.D, Magi, A., Király, O., Barta, C. & Urbán, R. (2017). Reward Deficiency Syndrome Questionnaire (RDSQ):
A new tool to assess the psychological features of reward deficiency. Journal of Behavioral Addictions, 6 (Supplement 1), 11.

  • ‘Reward Deficiency Syndrome’ (RDS) is a theory assuming that specific individuals do not reach a satisfactory state of reward due to the functioning of their hypodopaminergic reward system. For this reason, these people search for further rewarding stimuli in order to stimulate their central reward system (i.e., extreme sports, hypersexuality, substance use and/or other addictive behaviors such as gambling, gaming, etc.). Beside the growing genetic and neurobiological evidence regarding the existence of RDS little re- search has been done over the past two decades on the psychological processes behind this phenomenon. The aim of the present paper is to provide a psychological description of RDS as well as to present the development of the Reward Deficiency Syndrome Questionnaire (developed using a sample of 1,726 participants), a new four-factor instrument assessing the different aspects of reward deficiency. The results indicate that four specific factors contribute to RDS comprise “lack of satisfaction”, “risk seeking behaviors”, “need for being in action”, and “search for overstimulation”. The paper also provides psychological evidence of the association between reward deficiency and addictive disorders. The findings demonstrate that the concept of RDS provides a meaningful and theoretical useful context to the understanding of behavioral addictions.

Demetrovics, Z., Bothe, B., Diaz, J.R., Rahimi­Movaghar, A., Lukavska, K., Hrabec, O., Miovsky, M., Billieux, J., Deleuze,
J., Nuyens, P. Karila, L., Nagygyörgy, K., Griffiths, M.D. & Király, O. (2017). Ten-Item Internet Gaming Disorder Test (IGDT-10): Psychometric properties across seven language-based samples. Journal of Behavioral Addictions, 6 (Supplement 1), 11.

  • Background and aims: The Ten-Item Internet Gaming Disorder Test (IGDT-10) is a brief instrument developed to assess Internet Gaming Disorder as proposed in the DSM­5. The first psychometric analyses carried out among a large sample of Hungarian online gamers demonstrated that the IGDT-10 is a valid and reliable instrument. The present study aimed to test the psychometric properties in a large cross-cultural sample. Methods: Data were collected among Hungarian (n = 5222), Iranian (n = 791), Norwegian (n = 195), Czech (n = 503), Peruvian (n = 804), French­speaking (n = 425) and English­ speaking (n = 769) online gamers through gaming­related websites and gaming-related social networking site groups. Results: Confirmatory factor analysis was applied to test the dimensionality of the IGDT-10. Results showed that the theoretically chosen one-factor structure yielded appropriate to the data in all language­based subsamples. In addition, results indicated measurement invariance across all language-based subgroups and across gen- der in the total sample. Reliability indicators (i.e., Cronbach’s alpha, Guttman’s Lambda-2, and composite reliability) were acceptable in all subgroups. The IGDT- 10 had a strong positive association with the Problematic Online Gaming Questionnaire and was positively and moderately related to psychopathological symptoms, impulsivity and weekly game time supporting the construct validity of the instrument. Conclusions: Due to its satisfactory psychometric characteristics, the IGDT-10 appears to be an adequate tool for the assessment of internet gam- ing disorder as proposed in the DSM-5.

Throuvala, M.A., Kuss, D.J., Rennoldson, M. & Griffiths, M.D. (2017). Delivering school-based prevention regarding digital use for adolescents: A systematic review in the UK. Journal of Behavioral Addictions, 6 (Supplement 1), 54.

  • Background: To date, the evidence base for school-delivered prevention programs for positive digital citizenship for adolescents is limited to internet safety programs. Despite the inclusion of Internet Gaming Disorder (IGD) as a pro- visional disorder in the DSM-5, with arguable worrying prevalence rates for problematic gaming across countries, and a growing societal concern over adolescents’ digital use, no scientifically designed digital citizenship programs have been delivered yet, addressing positive internet use among adolescents. Methods: A systematic database search of quantitative and qualitative research evidence followed by a search for governmental initiatives and policies, as well as, non­profit organizations’ websites and reports was conducted to evaluate if any systematic needs assessment and/or evidence-based, school delivered prevention or intervention programs have been conducted in the UK, targeting positive internet use in adolescent populations. Results: Limited evidence was found for school-based digital citizenship awareness programs and those that were identified mainly focused on the areas of internet safety and cyber bullying. To the authors’ knowledge, no systematic needs assessment has been conducted to assess the needs of relevant stakeholders (e.g., students, parents, schools), and no prevention program has taken place within UK school context to address mindful and positive digital consumption, with the exception of few nascent efforts by non­profit organizations that require systematic evaluation. Conclusions: There is a lack of systematic research in the design and delivery of school-delivered, evidence-based prevention and intervention programs in the UK that endorse more mindful, reflective attitudes that will aid adolescents in adopting healthier internet use habits across their lifetime. Research suggests that adolescence is the highest risk group for the development of internet addictions, with the highest internet usage rates of all age groups. Additionally, the inclusion of IGD in the DSM-5 as provisional disorder, the debatable alarming prevalence rates for problematic gaming and the growing societal focus on adolescents’ internet misuse, renders the review of relevant grey and published research timely, contributing to the development of digital citizenship programs that might effectively promote healthy internet use amongst adolescents.

Bányai, F., Zsila, A., Király, O., Maraz, A., Elekes, Z., Griffiths, M.D., Andreassen, C.S. & Demetrovics, Z. (2017). Problematic social networking sites use among adolescents: A national representative study. Journal of Behavioral Addictions, 6 (Supplement 1), 62.

  • Despite being one of the most popular activities among adolescents nowadays, robust measures of Social Media use and representative prevalence estimates are lacking in the field. N = 5961 adolescents (49.2% male; mean age 16.6 years) completed our survey. Results showed that the one-factor Bergen Social Media Addiction Scale (BSMAS) has appropriate psychometric properties. Based on latent pro le analysis, 4.5% of the adolescents belonged to the at-risk group, who reported low self-esteem, high level of depression and the elevated social media use (34+ hours a week). Conclusively, BSMAS is an adequate measure to identify those adolescents who are at risk of problematic Social Media use and should therefore be targeted by school-based prevention and intervention programs.

Bothe, B., Toth-Király, I. Zsila, A., Griffiths, M.D., Demetrovics, Z. & Orosz, G. (2017). The six-component problematic pornography consumption scale. Journal of Behavioral Addictions, 6 (Supplement 1), 62.

  • Background and aims: To our best knowledge, no scale ex- ists with strong psychometric properties assessing problematic pornography consumption which is based on an over- arching theoretical background. The goal of the present study was to develop a short scale (Problematic Pornography Consumption Scale; PPCS) on the basis of Griffiths` (2005) six-component addiction model that can assess problematic pornography consumption. Methods: The sample comprised 772 respondents (390 females; Mage = 22.56, SD = 4.98 years). Items creation was based on the definitions of the components of Griffiths’ model. Results: A confirmatory factor analysis was carried out leading to an 18­item second­order factor structure. The reliability of the PPCS was good and measurement invariance was established. Considering the sensitivity and specificity values, we identified an optimal cut­off to distinguish between problematic and non-problematic pornography users. In the present sample, 3.6% of the pornography consumers be- longed to the at-risk group. Discussion and Conclusion: The PPCS is a multidimensional scale of problematic pornography consumption with strong theoretical background that also has strong psychometric properties.

Dr Mark Griffiths, Professor of Behavioural Addiction, International Gaming Research Unit, Nottingham Trent University, Nottingham, UK

Don’t blame the game: Parents, videogame content, and age ratings

Back in March 2015, BBC News reported that parents of children in 16 Cheshire county schools had been sent a letter saying that head teachers would report them to the authorities if they allowed their children to play videogames that are rated for adults (i.e., games that have an ‘18’ rating). The teachers claimed that popular games like Grand Theft Auto and Call of Duty are too violent to be played by those under the age of 18 years. They also stated that such games increased sexualised behaviour and left children vulnerable to sexual grooming. The schools also threatened to report parents who let their children play such games because it was a form of parental neglect. The author of the letter, Mary Hennessy Jones, was quoted as saying that:

“We are trying to help parents to keep their children as safe as possible in this digital era. It is so easy for children to end up in the wrong place and parents find it helpful to have some very clear guidelines”.

I’m sure the letter to parents was written with the best of intentions but as a parent of three ‘screenagers’ and someone that has spent almost three decades researching the effects of video games on human behaviour, this appears to be a very heavy-handed way to deal with the issue. Although it is illegal for any retailer to sell ‘18’ rated games to minors, it is not illegal for children to play such games, or illegal for parents to allow their children to play such games. Many parents need to be educated about the positives and negatives of playing video games but reporting them to the “authorities” is not the right way forward.

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Back in the early 1990s I was probably the only academic in the UK carrying out scientific research on children’s video game playing. In fact, I was proud of my role in getting age ratings onto all video games in the first place, and for writing the text for educational information leaflets for parents (outlining the effects of excessive playing of such games) sponsored by the National Council for Educational Technology. There are many positive benefits of playing video games (something that I wrote about in a previous article for The Conversation).

I know from first-hand experience that children often play games that are age-inappropriate. Two years ago, my (then) 13-year old son said he was the only boy in his class that did not play or own the Call of Duty video game. This is also borne out by research evidence. One study that I was involved in found that almost two-thirds of children aged 11- to 13-years of age (63%) had played an 18+ video game. Unsurprisingly, boys (76%) were more likely than girls (49%) to have played an 18+ video game. Children were also asked about how often they played 18+ video games. Of the two-thirds who had played them, 8% reported playing them “all the time”, 22% reported playing them “most of the time”, 50% reported playing them “sometimes”, 18% reported playing them “hardly ever”. Again, boys were more likely than girls to play 18+ video games more frequently. Children were asked how they got access to 18+ plus video games. The majority had the games bought for them by family or friends (58%), played them at a friend’s house (35%), swapped them with friends (27%), or bought games themselves (5%). This research certainly appears to suggest that parents and siblings are complicit in the playing of age-inappropriate games.

There is a growing amount of scientific literature that has examined the content of video games designed for adults. For instance, a study led by Dr. Kimberley Thompson and published in the Archives of Pediatric and Adolescent Medicine attempted to quantify the depiction of violence, blood, sexual themes, profanity, substances, and gambling in adult (18+) video games and to assess whether the actual game content matched the content descriptor on the packaging. Although content descriptors for violence and blood provided a good indication of content in the 36 games examined, the authors concluded that 81% of the games studied (n=29) lacked content descriptors of other adult content. Other studies carried out by the same research team have found that adult content can be found in lots of games aimed at young children and teenagers.

Another study led by Dr. David Walsh published in Minerva Pediatrica tested the validity of media rating systems (including video games). Results showed that when the entertainment industry rated a product as inappropriate for children, parents also agreed that it was inappropriate. However, parents disagreed with many industry ratings that were designated as containing material as suitable for children. The products rated as appropriate for adolescents by the industry were of the greatest concern to parents.

The issue of children and adolescents playing 18+ games is no different from the debates about children and adolescents watching 18+ films. However, based on anecdotal evidence appears that parents are more likely to adhere to age ratings on films than they are on video games. This is one area that both media researchers and media educators need to inform parents to be more socially responsible in how they monitor their children’s leisure activity. A school sending out a threatening letter to parents is unlikely to change parental behaviour. Education and informed debate is likely to have a much greater effect in protecting our children from the potential harms of video game playing.

Dr. Mark Griffiths, Professor of Behavioural Addiction, International Gaming Research Unit, Nottingham Trent University, Nottingham, UK

 Further reading

Anderson, C.A., Gentile, D.A., & Dill, K.E. (2012). Prosocial, antisocial and other effects of recreational video games. In D.G. Singer, & J.L. Singer (Eds), Handbook of Children and the Media, Second Edition, (pp. 249-272). Thousand Oaks, CA: Sage.

Anderson, C. A., Shibuya, A., Ihori, N., Swing, E. L., Bushman, B.J., Sakamoto, A., Rothstein, H.R., & Saleem, M. (2010). Violent video game effects on aggression, empathy, and prosocial behavior in eastern and western countries: a meta-analytic review. Psychological Bulletin, 136, 151-173.

Bartlett, C. P., Anderson, C.A. & Swing, E.L. (2009). Video game effects confirmed, suspected and speculative: A review of the evidence. Simulation and Gaming, 40, 377-403.

Ferguson, C. J. (2007). Evidence for publication bias in video game violence effects literature: A meta analytic review. Aggression and Violent Behavior, 12, 470-482.

Ferguson, C. J. (2013). Violent video games and the supreme court: Lessons for the scientific community in the wake of Brown v. Entertainment Merchants Association. American Psychologists, 68, 57-74.

Ferguson, C. J., San Miguel, S. & Hartley, T. (2009).  Multivariate analysis of youth violence and aggression: The influence of family, peers, depression and media violence. Journal of Paediatrics, 155, 904-908.

Gentile, D. A. & Stone, W. (2005). Violent video game effects in children and adolescents: A review of the literature. Minerva Pediatrics, 57, 337-358.

Griffiths, M.D. (1998). Video games and aggression: A review of the literature. Aggression and Violent Behavior, 4, 203-212.

Griffiths, M.D. (2000). Video game violence and aggression: Comments on ‘Video game playing and its relations with aggressive and prosocial behaviour’ by O. Weigman and E.G.M. van Schie. British Journal of Social Psychology, 39, 147-149.

Griffiths, M.D. (2010). Age ratings on video games: Are the effective? Education and Health, 28, 65-67.

Griffiths, M.D. & McLean, L. (in press). Content effects: Online and offline games. In P. Roessler (Ed.), International Encyclopedia of Media Effects. Chichester: Wiley.

Grüsser, S.M., Thalemann, R. & Griffiths, M.D. (2007). Excessive computer game playing: Evidence for addiction and aggression?  CyberPsychology and Behavior, 10, 290-292.

Ivory, J.D., Colwell, J., Elson, M., Ferguson, C.J., Griffiths, M.D., Markey, P.M., Savage, J. & Williams, K.D. (2015). Manufacturing consensus in a divided field and blurring the line between the aggression concept and violent crime. Psychology of Popular Media Culture, 4, 222–229.

McLean, L. & Griffiths, M.D. (2013). The psychological effects of videogames on young people. Aloma: Revista de Psicologia, Ciències de l’Educació i de l’Esport, 31(1), 119-133.

McLean, L. & Griffiths, M.D. (2013). Violent video games and attitudes towards victims of crime: An empirical study among youth. International Journal of Cyber Behavior, Psychology and Learning, 2(3), 1-16.

Mehroof, M. & Griffiths, M.D. (2010). Online gaming addiction: The role of sensation seeking, self-control, neuroticism, aggression, state anxiety and trait anxiety. Cyberpsychology, Behavior, and Social Networking, 13, 313-316.

Ga(y)ming studies: The importance of sexuality in video gaming

Back in May 2014, hundreds of news outlets reported on Nintendo’s decision not to allow gamers to play as gay characters and form same-sex relationships in the life-simulation game Tomodachi Life. Understandably, there was disquiet and outrage from a number of quarters despite Nintendo’s statement that “Tomodachi Life was intended to be a whimsical and quirky game [and] not trying to provide social commentary”. Their statement at the time appeared to fan the flames rather than silence the critics.

I have been researching video game play for almost three decades and I’ve always found issues surrounding character formation, sexuality, and gender in gaming of great psychological interest. In one of our studies we found that a majority of gamers (57%) had gender-swapped their game character with female gamers (68%) being more likely to gender swap than male gamers (54%). We argued that gender swapping enabled gamers to play around and experiment with various aspects of their in-game character that are not so easy to do in real life. For others it was just fun to see if they felt any different playing a different gendered character. What makes our findings interesting is that in most instances, the gamers had the opportunity to choose the gender of their character and to develop other aspects of their character before they began to play. Choosing to gender swap may have had an effect on the gamers’ styles of play and interaction with other gamers. Whatever the reasons, it was clear from our research that the development of gamers’ online characters and avatars was important to them.

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One of the reasons for the importance of online gaming identities may be because it subverts traditional parasocial interaction (PI). PI is a concept used by psychologists that has traditionally described one-sided, parasocial interpersonal relationships in situations where one individual knows a great deal about someone else, but where the other person knows little about the other (the most common being the relationship between celebrities and their fans).

A study led by Nicholas Bowman (and published in a 2012 issue of the journal Cyberpsychology, Behavior and Social Networking [CPBSN]) argued that the playing of video games challenges this concept “as the distance between game players and characters is greatly reduced, if not completely removed, in virtual environments.” The study claimed that online gaming encourages the “psychological merging of a player’s and a character’s mind” and is critical in the development of character attachment. In this context, the sexuality of a character for a player may be of fundamental psychological importance.

This appears to be confirmed in a paper by Melissa Lewis and colleagues (also published in CPBSN) who developed a scale to assess ‘character attachment’ (the connection felt by a video game player toward a video game character”). They found that character attachment had a significant relationship with self-esteem, addiction, game enjoyment, and time spent playing games.

American researcher Dr. Adrienne Shaw has carried out a number of studies into lesbian, gay, bisexual, and transgender (LGBT) representation in video games from a cultural production perspective. She was one of the first academics in the gaming studies field to note that there was a relative lack of LGBT representation in video games. Other areas of the entertainment media (e.g., music, film, and television) appear to have much greater LGBT representation than in video games so it does beg the question of why the gaming industry appears to be behind in this respect. I recall writing a paper back in 1993 (in The Psychologist) where I argued that most video games at the time were designed by males for other males. This arguably alienated female gamers but eventually led to developers introducing strong female characters into video games (the most notable being Lara Croft in Tomb Raider). Maybe the appearance of LGBT characters and role models within games will increase over time but I’m not holding my breath.

In a more recent paper in a 2012 paper in the journal New Media and Society, Dr. Shaw claimed that the demand for minority representation in video games “often focuses on proving that members of marginalized groups are gamers” and that the gaming industry should focus on appealing to such players via targeted content. However, she argues that an individual’s identity as a gamer will intersect with “other identities like gender, race, and sexuality.” She then goes on to say that the negative connotations about being an online gamer may lead to such marginalized groups not wanting to engage in gaming. She concluded that “those invested in diversity in video games must focus their attention on the construction of the medium, and not the construction of the audience…[This] is necessary to develop arguments for representation in games that do not rely on marking groups as specific kinds of gaming markets via identifiers like gender, race, and sexuality.”

Nintendo’s decision not to allow gay relationships to form within Tomodachi Life was ill-judged, ill-informed, and outdated. Games in which identity content can be generated by its users needs to reflect the world in which the gamers’ live. In short, there should be no compromise when it comes to allowing gamers to choose their sexuality within the game.

(N.B. A version of this article first appeared in The Conversation)

Dr. Mark Griffiths, Professor of Behavioural Addiction, International Gaming Research Unit, Nottingham Trent University, Nottingham, UK

Further reading

Bowman, N. D., Schultheiss, D., & Schumann, C. (2012). “I’m attached, and I’m a good guy/gal!”: how character attachment influences pro-and anti-social motivations to play massively multiplayer online role-playing games. Cyberpsychology, Behavior, and Social Networking, 15(3), 169-174

Griffiths, M.D. (1993). Are computer games bad for children? The Psychologist: Bulletin of the British Psychological Society, 6, 401-407.

Griffiths, M.D., Arcelus, J. & Bouman, W.P. (2016). Video gaming and gender dysphoria: Some case study evidence. Aloma: Revista de Psicologia, Ciències de l’Educació i de l’Esport, 34(2), 59-66.

Hussain, Z., & Griffiths, M. D. (2008). Gender swapping and socializing in cyberspace: An exploratory study. CyberPsychology and Behavior, 11(1), 47-53.

Lewis, A. & Griffiths, M.D. (2011). Confronting gender representation: A qualitative study of the experiences and motivations of female casual-gamers. Aloma: Revista de Psicologia, Ciències de l’Educació i de l’Esport, 28, 245-272.

Lewis, M. L., Weber, R., & Bowman, N. D. (2008). “They may be pixels, but they’re MY pixels:” Developing a metric of character attachment in role-playing video games. CyberPsychology and Behavior, 11(4), 515-518.

McLean, L. & Griffiths, M.D. (2013). Female gamers: A thematic analysis of their gaming experience. International Journal of Games-Based Learning, 3(3), 54-71.

Shaw, A. (2009). Putting the gay in games cultural production and GLBT content in video games. Games and Culture, 4(3), 228-253.

Shaw, A. (2012). Do you identify as a gamer? Gender, race, sexuality, and gamer identity. New Media and Society, 14(1), 28-44.

Shaw, A. (2015). Gaming at the edge: Sexuality and gender at the margins of gamer culture. Minnesota: University of Minnesota Press.

Leisure pleasure treasure: A brief look at gambling within videogames

Over the last decade, gambling and gaming technologies have begun to converge with video games featuring gambling-like elements, and gambling games featuring video gaming-like elements. Many of the newer convergent gambling-gaming convergent forms include such activities as online penny auctions and gambling-type activities on social networking sites, so-called ‘social gaming’. With regard to video gaming including gambling-like elements, a paper that I co-wrote in 2012 with Dr. Daniel King in the journal International Gambling Studies noted that simulated gambling activities and gambling themes have a substantial presence in many modern video games. We noted that gambling content in video games can be categorized according to the following three categories:

  • Standard gambling simulation, a digitally simulated interactive gambling activity that is structurally identical to the standard format of an established gambling activity, such as blackjack or roulette;
  • Non-standard gambling simulation, an interactive gambling activity that involves the intentional wagering of in-game credits or other items on an uncertain outcome, in an activity that may be partially modelled on a standard gambling activity but which contains distinct player rules or other structural components that differ from established gambling games;
  • Gambling references, the appearance of non-interactive gambling material or gambling-related paraphernalia/materials within the context of the video game.

In regard to the second of these categories, it could be argued that some online video games feature mini-games that are non-standard gambling simulations. For instance, in February 2014, the mini-game Treasure Hunter (TH) was introduced into the online video game Runescape. To get in-game prizes, players have to get keys to open chests. Originally, to participate in TH, players had to play in a members’ world. Players that tried to play TH in a free world are given the message: “As a member, you are eligible for improved prizes, so please play Treasure Hunter on a members’ world instead.” However, in April 2014, TH was reformulated and for the first time, members’ prizes could be claimed by those playing in a free world also.

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In TH, five chests can be opened, each containing one of five different gems (going from most common to least common – white, yellow, orange, red, or purple gem – with white being the most common and purple being the rarest). After obtaining a key, players select a chest (not knowing what gem is inside the chest), and open it. The player is then given the option of storing the prize in the bank, discarding the prize, collecting the prize later, or cashing out for a small number of coins. There are a number of different ways to gain TH keys (free daily keys, keys obtained through skilful gameplay, and buying keys). Members get two free keys a day and those playing in free worlds only get one free key a day. Those players paying to be in the silver or gold Premier Club get three free keys a day.

It should also be noted that (i) TH is reset every night at midnight, (ii) free keys have to be used on the day, (iii) one monthly free key can be earned by playing ‘Troll Invasion’, (iv) players can buy bonds for gold coins or money, and (v) a random number generator is used to determine the winners. After completing any daily challenge, players receive an extra key, and after completing any in-game quest, players receive two additional keys. Keys can be bought in bundles of 15 (€3.99), 35 (€8.00), 75 (€16.00), 200 (€39.99) or 450 keys (€79.99). The maximum number of keys that could be bought is $200 (US) a day and $500 (US) a week. Keys can also be earned by watching advertisements, buying products, and completing surveys (and accessed via the ‘Earn keys’ option). TH prizes include in-game skilling items, weapons, bonus experience stars, etc. or can be converted to coins.

The legal definition of gambling in Great Britain is contained in the Gambling Act 2005. It notes that gambling includes “gaming”, “betting” or “participating in lottery”. Gaming is defined in the 2005 Act as “playing a game of a chance for a prize” while betting involves the process of placing or accepting a bet on anything other than financial services that remains uncertain to at least one party of the transaction at the time of the bet. By this definition alone, it would appear that Treasure Hunter is a form of gambling if purchases to participate are made (rather than being given free spins or keys, or earning them through skilful gameplay).

In 2015, the UK Gambling Commission highlighted that they believe the mini-games within Runescape to be ‘social gaming’ and not a game of chance and therefore out of their jurisdiction in relation to the regulation of the game. They have also claim that RuneScape bonds have no intrinsic value outside of Runescape under the terms of the British Gambling Act and therefore is not gambling. The Gambling Commission also note on their website that:

“We are not saying there are no risks in social gaming, nor are we saying that this ends our interest in the issue. We are simply saying that our current assessment of the available evidence is that there is no persuasive reason for us to take regulatory action, in effect to change from maintaining a watching brief. We will continue to monitor emerging evidence, and we are prepared to change this position if the evidence warrants it”.

However, there are instances when the bonds and prizes won do have value outside of the game. Bonds that are purchased with real life currency can be sold to another player for an in-game sum of money. Bonds and prizes can also be redeemed within the game for real-life services. These services are not just limited to the buying of game-related merchandise, such as the buying of card games like Top Trumps, but also includes attendance at offline RuneScape events, such as RuneFest, hotel rooms, and even plane tickets. The bonds can also be used to pay for postage and packing of items bought outside the game. Players can also donate the bonds to charity (in which Jagex contributes the full value of the bond to the charity chosen by the player). These examples clearly demonstrate that the bonds do have specific financial value outside the game in some circumstances, and an impact on real-world activities. More specifically, they demonstrate that the financial value of the bonds and prizes can be used outside the game itself.

Mini-games like Treasure Hunter within the online game RuneScape are not uncommon and are another example of convergence between gambling and video gaming. These games appear to meet the criteria for gambling found in the gambling studies literature and should be regulated as such.

Dr. Mark Griffiths, Professor of Behavioural Addictions, International Gaming Research Unit, Nottingham Trent University, Nottingham, UK

Further reading

Gambling Commission (2015). Explaining our approach to social gaming. Located at: http://www.gamblingcommission.gov.uk/Gambling-data-analysis/Social-media/Explaining-our-approach-to-social-gaming.aspx

Griffiths, M.D. (2003). Internet gambling: Issues, concerns and recommendations. CyberPsychology and Behavior, 6, 557-568.

Griffiths, M.D. (2015). Adolescent gambling and gambling-type games on social networking sites: Issues, concerns, and recommendations. Aloma: Revista de Psicologia, Ciències de l’Educació i de l’Esport, 33(2), 31-37.

Griffiths, M.D. & Carran, M. (2015). Are online penny auctions a form of gambling? Gaming Law Review and Economics, 19, 190-196.

Griffiths, M.D., King, D.L. & Delfabbro, P.H. (2009). Adolescent gambling-like experiences: Are they a cause for concern? Education and Health, 27, 27-30.

Griffiths, M.D., King, D.L. & Delfabbro, P.H. (2014). The technological convergence of gambling and gaming practices. In Richard, D.C.S., Blaszczynski, A. & Nower, L. (Eds.). The Wiley-Blackwell Handbook of Disordered Gambling (pp. 327-346). Chichester: Wiley.

Griffiths, M.D. & King, R. (2015). Are mini-games within RuneScape gambling or gaming? Gaming Law Review and Economics, 19, 64-643.

King, D.L., Delfabbro, P.H., Derevensky, J. & Griffiths, M.D. (2012). A review of Australian classification practices for commercial video games featuring simulated gambling. International Gambling Studies, 12, 231-242.

Sense and sense-ability: A brief look at ‘virtual reality addiction’

Ever since I started researching into technological addictions, I have always speculated that ‘virtual reality addiction’ was something that psychologists would need to keep an eye on. In 1995, I coined the term ‘technological addictions’ in a paper of the same name in the journal Clinical Psychology Forum. In the conclusions of that paper I asserted:

“There is little doubt that activities involving person-machine interactivity are here to stay and that with the introduction of such things [as] virtual reality consoles, the number of potential technological addictions (and addicts) will increase. Although there is little empirical evidence for technological addictions as clinical entities at present, extrapolations from research into fruit machine addiction and the exploratory research into video game addiction suggest that they do (and will) exist”.

Although I wrote the paper over 20 years ago, there is little scientific evidence (as yet) that individuals have become addicted to virtual reality (VR). However, that is probably more to do with the fact that – until very recently – there had been little in the way of affordable VR headsets. (I ought to just add that when I use the term ‘VR addiction’ what I am really talking about is addiction to the applications that can be utilized via VR hardware rather than the VR hardware itself).

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VR’s potential in mass commercial markets appears to be finally taking off because of mass-produced affordable hardware such as Oculus Rift, HTC Vive, PlayStation VR and the (ultra-cheap) Google Cardboard (in which a smartphone can be inserted into cardboard VR headset frame). Last year, a report by the marketing and consulting company Tractica claimed that spending on virtual reality hardware could be as much as $21.8 billion (US) by 2020. A more recent report by online and digital market research company Juniper estimated that global sales of VR headsets would rise from 3 million in 2016 to 30 million by 2020. Three markets are likely drive sales, and they all happen to be areas that I research into from an addiction perspective – video gaming, gambling, and sex. I’ve noted in many of my academic papers over the years (particularly my early papers on online gambling addiction and online sex addiction) that when new technological advances occur, the sex and gambling industries always appear to be the first to invest and produce commercial products and services using such technologies, and VR is no different. As an online article in Wareable by Dan Sung on VR sex noted:

“What [VR] headsets offer is immersion; 180-degree (or more), stereoscopic action with you as the star of the show and the adult actors and actresses looking deep and lustfully into your eyes as they tend to your genitalia. It’s small wonder that users have been donning their headsets and earphones in numbers and praying to their god that nobody walks in. Yet gambling and porn are synonymous with addiction, and increasingly, questions are being asked about whether the VR revolution could finally ensnare us humans into virtual worlds”.

I was interviewed by Sung for the same article and I made a number of different observations about VR sex. I commented that in terms of people feeling reinforced, aroused, rewarded, sex is the ultimate in things that are potentially addictive. Sex is one of those activities that is highly reinforcing, it’s highly rewarding and how people feel is probably better than the highs and buzzes from other behaviours. Theoretically, I can see that VR sex addiction would be possible but I don’t think it’s going to be on the same scale as other more traditional addictions. The thing about VR (and VR sex) – and similarly to the internet – is that it’s non-face-to-face, it’s non-threatening, it’s destigmatising, and it’s non-alienating. VR sex could be like that whether it’s with fictitious partners, someone that you’re actually into, or someone that you’ve never met before. Where VR sex is concerned, if you can create a celebrity in a totally fictitious way, that will happen. There may be celebrities out there that will actually endorse this and can make money and commercialise themselves to do that. It can work both ways. Some people might find it creepy while others might see something they can make money from.

In one of my previous blogs I looked at the area of ‘teledildonics’, a VR technology that has been around for over two decades (in fact I was first interviewed on this topic on a 1993 Channel 4 television programme called Checkout ’93). Dan Sung also interviewed Kyle Machulis who runs the Metafetish teledildonics website for his article. He said that in relation to VR sex there is a problem with haptics (i.e., the science of applying tactile sensation and control to interaction with computer applications):

 “We’re good on video and audio but haptics is a really, really hard problem…A lot of toys out there right now are horrible and it’s very hard to come up with something quality. So, instead, what the porn industry is aiming for right now is immersion. It may not feel better but they’re so much closer to the action that it may be better, and I think we’re on the cusp of that right now.” First, we need consumer hardware. We need things to be released and available to customers to see if it’s really going to take off or not. But when this happens – late this year, the beginning of next – as soon as the headsets are available, the media is ready and waiting…Of course, there’s straight women, gay men and gay women to develop for too but, for a lot of people, the perfect porn experience is doing something that’s not even physically possible – either through the laws of physics or the laws of land, and that’s something that only VR can solve…Even so, what we saw in teledildonics in gaming is that people used them to begin with but there’s always a lot of fall off with new technologies like this. So, there’s going to be a hardcore set of people who stay with VR porn but it’s hard to say how popular it will be beyond that. We’re all still guessing at the moment. This time next year it will be a completely different story”.

Another area that we will need to monitor is how the gambling industry will harness VR technology. The most obvious application of VR in the gambling world is in the online gambling sector. I can imagine some online gamblers wanting their gambling experiences to be more immersive and for their online gambling sessions to be more akin to gambling offline surrounded by the sights and sounds of an offline gambling venue. There is no technical reason that I know of why people that gamble via their computers, laptops, smartphones or tablets could not wear VR headsets and be playing poker opposite a virtual opponent while still sat on the sofa at home. As Paul Swaddle (CEO of Pocket App) noted in a recent issue of Gambling Insider:

We already know that participation in online gambling is snowballing, so if the entertainment industry can use VR to simulate the experience of being inside a video game, or social media sites can give you the opportunity to not just see your friends’ pictures, but to walk through them, why shouldn’t online casinos be able to do the same? VR may actually be the hook that mobile and online casinos need to draw in more millennials, with the average age of players in mobile casinos currently being 40 [years old], and the average age of mobile gamblers in general being 35 [years old]. Millennials simply aren’t engaging with mobile and online casinos to the same extent as older generations, and I suspect that this is down to younger players being much more used to immersive and sociable gaming, as a result of the cutting-edge developments that are being constantly rolled out in the video gaming industry”.

I agree with Swaddle’s observations as the gambling industry are constantly thinking about the ways to bring in newer players. Today’s modern screenagers love technology and do not appear to have any hang-ups about using wearable technology including Fitbit and the Apple Watch. As Swaddle goes on to say:

“By using 
VR technology to transport players and their friends to exciting locations for their online gambling experience, such as a famous casino in Las Vegas, or a smoky basement room in 1920s New York, or even to the poker table in the James Bond film Casino Royale, mobile and online casinos may stand a better chance of drawing in younger audiences if they use VR to gamify the casino experience”.

Again, this makes a lot of sense to me and I wouldn’t bet against this happening. Swaddle thinks that such VR gambling experiences will become commonplace in the years to come and that the gambling industry needs to get on the VR bandwagon now. 

Perhaps of most psychological concern is the use of VR in video gaming. There is a small minority of players out there who are already experiencing genuine addictions to online gaming. VR takes immersive gaming to the next level, and for those that use games as a method of coping and escape from the problems they have in the real world it’s not hard to see how a minority of individuals will prefer to spend a significant amount of their waking time in VR environments rather than their real life.

Dr Mark Griffiths, Professor of Behavioural Addiction, International Gaming Research Unit, Nottingham Trent University, Nottingham, UK

Further reading

Ashcroft, S. (2015). VR revenue to hit $21.8 billion by 2020. Wareable, July 29. Located at: http://www.wareable.com/vr/vr-revenues-could-reach-dollar-218-billion-by-2020-1451

Griffiths, M.D. (1995). Technological addictions. Clinical Psychology Forum, 76, 14-19.

Griffiths, M.D. (1996). Gambling on the internet: A brief note. Journal of Gambling Studies, 12, 471-474.

Griffiths, M.D.  (2001).  Sex on the internet: Observations and implications for sex addiction. Journal of Sex Research, 38, 333-342.

Griffiths, M.D. (2003). Internet gambling: Issues, concerns and recommendations. CyberPsychology and Behavior, 6, 557-568.

Griffiths, M.D. (2012). Internet sex addiction: A review of empirical research. Addiction Research and Theory, 20, 111-124.

Griffiths, M.D., Király, O., M. Pontes, H.M. & Demetrovics, Z. (2015). An overview of problematic gaming. In Starcevic, V. & Aboujaoude, E. (Eds.), Mental Health in the Digital Age: Grave Dangers, Great Promise (pp.27-55). Oxford: Oxford University Press.

Juniper Research (2016). White paper: The rise of virtual reality. Available from: http://www.juniperresearch.com/document-library/white-papers/the-rise-of-virtual-reality

Király, O., Nagygyörgy, K., Koronczai, B., Griffiths, M.D. & Demetrovics, Z. (2015). Assessment of problematic internet use and online video gaming. An overview of problematic gaming. In Starcevic, V. & Aboujaoude, E. (Eds.), Mental Health in the Digital Age: Grave Dangers, Great Promise (pp.46-68). Oxford: Oxford University Press.

Stables, J. (2016).  Gambling, gaming and porn: Research says VR is set to blast off. Wareable, September 15. Located at: http://www.wareable.com/vr/gaming-gambling-and-porn-research-says-vr-is-set-to-blast-off-1682

Swaddle, P. (2016). Is virtual reality the future of mobile and online gambling? Gambling Insider, 23, June 3, p.9

Sung, D. (2015). VR and vice: Are we heading for mass addiction to virtual reality fantasies? Wareable, October 15. Located at: http://www.wareable.com/vr/vr-and-vice-9232

Tractica (2015). Virtual reality for consumer markets. Available at: https://www.tractica.com/research/virtual-reality-for-consumer-markets/

Game on: A brief look at gambling on eSports

Like daily fantasy sports, betting on eSports (i.e., professional video gaming) has increased in popularity over the last few years and has given rise to allegations of unregulated and underage gambling. The eSports market is large. According to a 2016 report by Superdata, professional eSports is growing exponentially and is worth an estimated $612 (US) million a year. Furthermore, Eilers and Krejcik Gaming estimate that real money betting on eSports betting will reach $10 billion (US) by 2020. The professionalization and sportification of this entertainment form has brought sports-world elements to it: stadium-like facilities, cheering stands, sponsors, big rewards, and competition. Instant replays, jumbotrons (i.e., super-huge television screens), and referees add to the sport dramatisation. In some notorious cases, prizes have gone beyond the $10 million [US] threshold in a packed arena housing 73,000 fans. According to by John McMullan and Delthia Miller in a 2008 issue of the Journal of Gambling Issues, sportification is the process of incorporating the logics of sport to non-sporting contexts (e.g., poker, eSports. This can materialise in many ways but most commonly occurs when (i) other industries capitalise on the positive attributes of sport (e.g., popularity, engagement, or sanity and health inferences); and (ii) non-sport fields try to increase the entertainment and playability of their products and their association with joy and excitement.

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Twitch, an online platform that streams live video gaming, informs its’ advertisers that it has 100 million monthly viewers, who watch for an average of 106 minutes a day. Betting on eSports presents new challenges. As a news report in Bloomberg news observed in relation to betting on the game Counterstrike: Global Offensive (CSGO):

“Gambling – licensed, regulated, and by adults – is generally accepted in eSports. There is growing concern, though, that teenagers are being attracted to different forms of betting facilitated by third-party providers. One such platform is CSGO Lounge (an independent site not affiliated with Valve Software, which develops the game itself). The site allows spectators to bet in-game add-ons known as skins – weapons, tools and the like – on the results of matches. Not all skins are created equal, and the rarity of some means they can cost hundreds of real dollars on marketplace sites like SkinXchange.com. The temptation is too much for some”.

Put simply, skin gambling is the use of virtual goods and items (typically cosmetic elements that have no direct influence on gameplay) as virtual currency to bet on the outcome of professional matches. The Bloomberg article also claims on the basis of interviews with industry insiders that underage skin gambling is a “huge problem”. Justin Carlson (lead developer of SkinXchange) claims there are “countless” parents whose children have used their credit cards without their knowledge to buy skins and bet on gaming on other sites. Although anecdotal, Carlson claims that some minors have “racked up hundreds or thousands of dollars in skins on ‘SkinXchange’ just to lose them all on some betting or jackpot site”. It’s clear that people trading skins in eSports has grown over the last few years and various regulators around the world – such as the UK Gambling Commission (UKGC) – are considering regulation and says it is an “emerging product” and an “area for continuing future focus”. More specifically, the UKGC’s 2016 Annual Report notes:

 “The growing market in esports and computer gaming has scope to present issues for regulation and player protection – issues which are being examined by gambling regulators in other international markets…These issues range from the emergence of real money esports betting markets, to trading in-game items which blur the lines between gambling and social gaming. Our focus will be to understand developments, including engaging with key stakeholders, and we will work wherever we can to ensure the risks associated with these, particularly to children and young people, are minimised”.

One of the complicating factors for eSports gambling is that while cash is the currency for many gamblers, there is a growing trend towards the use of virtual currencies, or ‘in-game items’ which, according to the UKGC, can be “won, traded, sold or used as virtual currency to gamble with and converted into money or money’s worth”. These, according to the UKGC, “include digital commodities (such as ‘skins’) which can be won or purchased within the confines of computer games and can then be used as a form of virtual currency on a growing number of gambling websites”. No academic research has examined underage skin gambling but this is an issue that is unlikely to diminish over the coming years.

It is also worth noting that this massive interest in eSports followed by a massive audience has led most major betting operators to include eSports in their daily gambling offer. However, the singularities of eSports market pose new challenges that conventional online betting sites struggle to address. Suraj Gosai, co-founder of Blinkpool, an eSports dedicated betting platform, laid out two main problems: in-play betting limitations and odds algorithmic programming. For in-play betting to be viable, companies need to get access to reliable, instantaneous, and unambiguous data that can settle bets and separate winners from losers. Data companies like Perform do that in sport, and betting operators rely on their data to offer in-play action to gamblers. The problem in eSports is that actions are not as quantified and standardised as in real-life sports. To counteract that, Blinkpool created a computer vision technology that extracts data from real-time action and promotes hyper-contextual opportunities, that is, 10- to 45-second in-play betting mini-markets concerning very specific developments in the narrative of the games.

Odds programming in sports betting is fundamentally based on historical data from hundreds of thousands of games, from which each factor (home advantage, table position, head-to-head, etc.) is weighted in to determine the probability of an event occurring. In the fixed-odds betting market, the bookmaker makes available to bettors that probability plus a benefit margin. When placing a bet, an individual bets against the probability that the house has predicted. This is not yet feasible in eSports because the historical data are scarce and the modelling is complex. Companies are circumventing this problem by offering exchange betting rather than fixed-odds. This method comprises peer betting, that is, bettors do not bet against the house but between one another. This way, the house gets a commission from winning bets and operates a much less risky business.

Dr. Mark Griffiths, Professor of Behavioural Addictions, International Gaming Research Unit, Nottingham Trent University, Nottingham, UK

Further reading

Bracken, G. (2016). We hope to be the home of eSports betting. Gambling Insider. Available from: https://www.gamblinginsider.com/in-depth/1909/we-hope-to-be-the-home-of-esports-betting

Gambling Commission (2015). Explaining our approach to social gaming. Located at: http://www.gamblingcommission.gov.uk/Gambling-data-analysis/Social-media/Explaining-our-approach-to-social-gaming.aspx

Gambling Commission (2016). Annual Report 2015/16. Birmingham: Gambling Commission.

McMullan, J. L., & Miller, D. (2008). All in! The commercial advertising of offshore gambling on television. Journal of Gambling Issues, 22, 230-251.

Melbourne, K. & Campbell, M. (2015). Professional gaming may have an underage gambling problem. Bloomberg, September 7. Available at: http://www.bloomberg.com/news/articles/2015-09-07/professional-video-gaming-has-an-underage-gambling-problem

Superdata (2016). eSports Market Report. Available at: https://www.superdataresearch.com/market-data/esports-market-brief/

Wingfield, N. (2014) In e-Sports, video gamers draw real crowds and big money. New York Times, August 30. Available from: http://www.nytimes.com/2014/08/31/technology/esports-explosion-brings-opportunity-riches-for-video-gamers.html?_r=0

Wood, J. (2016). UK Gambling Commission: We’ll work to minimize risks from emerging esports betting markets. Esports Betting Report, July 19. Available at: http://www.esportsbettingreport.com/uk-regulators-address-esports-betting/

Net bets: What makes betting online attractive to gamblers?

Over the past two decades I have carried out a lot of research on what factors are important in attracting people to engaging in online activities such as online video gaming, online gambling, online shopping, and online sex. Research has shown that virtual environments have the potential to provide short-term comfort, excitement and/or distraction – all of which can be highly reinforcing to internet users. My research has consistently shown that there are many generic factors that facilitate online use including accessibility, anonymity, affordability, convenience, escape, immersion, interactivity, disinhibition, and simulation. Today’s blog briefly examines these factors.

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Accessibility Access to the Internet is now commonplace and widespread, and can be done easily from the home, the workplace and (via mobile gambling) on the move. Given that the uptake of consumptive behaviours is strongly correlated with increased access to the activity, it is not surprising that the incidence of activities like online gambling and online gaming is slowly increasing across different populations across the world. Fundamentally, increased accessibility of these activities enables the individual to rationalize involvement by removing previously restrictive barriers such as time constraints emanating from occupational and social commitments.

Anonymity – The anonymity of the Internet allows users to privately engage in such activities as sex and gambling without the fear of stigma. This anonymity can also provide the user with a greater sense of perceived control over the content, tone, and nature of the online experience. Anonymity also has the capacity to increase feelings of comfort since there is a decreased ability to look for, and thus detect, signs of insincerity, disapproval, or judgment in facial expression, as would be typical in face-to-face interactions. For activities such as gambling, this may be a positive benefit – particularly when losing – as no-one will actually see the face of the loser. Anonymity, like increased accessibility, may reduce social barriers to engaging in gambling, particularly skill-based gambling activities such as poker that are relatively complex and often possess tacit social etiquette. The potential discomfort of committing a structural or social faux-pas in the gambling environment because of inexperience is minimized because the individual’s identity remains concealed.

Affordability – Given the wide accessibility of the Internet, it is now relatively inexpensive to use online services on offer. Furthermore, the overall cost of has been reduced significantly through technological developments, again, rendering affordability less of a restrictive force when it comes to rationalizing involvement in the behaviour. For example, the saturation of online gambling industry has lead to increased competition, and the consumer is benefiting from the ensuing promotional offers and discounts available on gambling outlay. Regarding interactive wagering, the emergence of peer-to-peer gambling through the introduction of betting exchanges has provided punters with commission free sporting gambling odds, which in effect means the player needs to risk less money to obtain potential revenue. Finally, ancillary costs of face-to-face gambling, such as parking, tipping and purchasing refreshments, is removed when gambling within the home and therefore the overall cost of gambling is reduced making it more affordable.

Convenience – Online behaviours usually occur in the familiar and comfortable environment of home or workplace thus reducing the feeling of risk and allowing even more adventurous behaviours. For the internet user, not having to move from their home or their workplace is of great positive benefit and increases the attractiveness of online activities compared to offline activities.

Escape – For some internet users, the primary reinforcement to engage in an online behaviour is the gratification they experience online. However, the experience of activities like online gambling, online gaming and/or online sex may be reinforced through a subjectively and/or objectively experienced ‘high’ or positive change in mood state. The mood-modifying experience has the potential to provide an emotional or mental escape and further serves to reinforce the behaviour. In short, online activities can provide a potent escape from the stresses and strains of real life.

Immersion – The medium of the Internet can provide feelings of dissociation and immersion and may facilitate feelings of escape (see above). Immersion can produce lots of different types of feelings that may be reinforcing for the internet user such as losing track of time, feeling like you’re someone else, and being in a trance like state.

Interactivity – The interactivity component of the Internet can also be psychologically rewarding and different from other more passive forms of entertainment (e.g., television). The interactive nature of the Internet can therefore provide a convenient way of increasing such personal involvement that can – in online situations – lead to increased online use. Furthermore, the alternative methods of peer interaction are available within interactive online activities that retain the socially reinforcing aspects of the behaviour. Individuals can communicate via computer-mediated communication in most online activities (including gambling and gaming).

Disinhibition – The feeling of disinhibition is one of the Internet’s key appeals as there is little doubt that the Internet makes people less inhibited when they are online. Online users appear to open up more quickly online compared to offline situations and reveal themselves emotionally much faster than in the offline world. This has been referred to by Dr. John Suler as ‘hyperpersonal communication’. According to Dr. Suler, this occurs because of four features of online communication: 

  • The communicators usually share social categories so will perceive each other as similar (e.g., all online poker players)
  • The message sender can present themselves in a positive light, and so may be more confident
  • The format of online interaction (e.g., there are no other distractions, users can spend time composing messages, mix social and task messages, users don’t waste cognitive resources by answering immediately)
  • The communication medium provides a feedback loop whereby initial impressions are built upon and strengthened.

Simulation – Finally, simulations provide an ideal way in which to learn about something and which tends not to have any of the possible negative consequences. For instance, most online gambling sites have a practice mode format, where potential gamblers can place a non-monetary bet in order to see and practice the procedure of gambling on that site. Furthermore, gambling in practice modes can build self-efficacy and potentially increase perceptions of control in determining gambling outcomes motivating participation in their ‘real cash’ counterparts within the site.

Dr Mark Griffiths, Professor of Gambling Studies, International Gaming Research Unit, Nottingham Trent University, Nottingham, UK

Further reading

Griffiths, M.D. (1998). Internet addiction: Does it really exist? In J. Gackenbach (Ed.), Psychology and the Internet: Intrapersonal, Interpersonal and Transpersonal Applications. pp. 61-75. New York: Academic Press.

Griffiths, M.D. (2003). Internet gambling: Issues, concerns and recommendations. CyberPsychology and Behavior, 6, 557-568.

Griffiths, M.D. (2009). Internet gambling in the workplace. Journal of Workplace Learning, 21, 658-670.

Griffiths, M.D. (2010). Gambling addiction on the Internet. In K. Young & C. Nabuco de Abreu (Eds.), Internet Addiction: A Handbook for Evaluation and Treatment (pp. 91-111). New York: Wiley.

Griffiths, M.D. (2010). Internet abuse and internet addiction in the workplace. Journal of Worplace Learning, 7, 463-472.

Griffiths, M.D. (2012). Internet sex addiction: A review of empirical research. Addiction Research and Theory, 20, 111-124.

Griffiths, M.D., Kuss, D.J., Billieux J. & Pontes, H.M. (2016). The evolution of internet addiction: A global perspective. Addictive Behaviors, 53, 193–195.

Griffiths, M.D. & Parke, J. (2002). The social impact of internet gambling. Social Science Computer Review, 20, 312-320.

Griffiths M.D. & Szabo, A. (2014). Is excessive online usage a function of medium or activity? An empirical pilot study. Journal of Behavioral Addictions, 3, 74–77.

Kuss, D.J. & Griffiths, M.D. (2011). Online social networking and addiction: A literature review of empirical research. International Journal of Environmental and Public Health, 8, 3528-3552.

Kuss, D. & Griffiths, M.D. (2012).  Internet gambling behavior. In Z. Yan (Ed.), Encyclopedia of Cyber Behavior (pp.735-753. Pennsylvania: IGI Global

Kuss, D.J. & Griffiths, M.D. (2012). Online gaming addiction in adolescence: A literature review of empirical research. Journal of Behavioral Addictions, 1, 3-22.

Kuss, D.J. & Griffiths, M.D. (2012). Internet and gaming addiction: A systematic literature review of neuroimaging studies. Brain Sciences, 2, 347-374.

Kuss, D.J. & Griffiths, M.D. (2012). Online gaming addiction: A systematic review. International Journal of Mental Health and Addiction, 10, 278-296.

Kuss, D.J., Griffiths, M.D., Karila, L. & Billieux, J. (2014). Internet addiction: A systematic review of epidemiological research for the last decade. Current Pharmaceutical Design, 20, 4026-4052.

Pontes, H.M., Kuss, D.J. & Griffiths, M.D. (2015). The clinical psychology of Internet addiction: A review of its conceptualization, prevalence, neuronal processes, and implications for treatment. Neuroscience and Neuroeconomics, 4, 11-23.

Pontes, H.M., Szabo, A. & Griffiths, M.D. (2015). The impact of Internet-based specific activities on the perceptions of Internet Addiction, Quality of Life, and excessive usage: A cross-sectional study. Addictive Behaviors Reports, 1, 19-25.

Suler, J. (2004). The online disinhibition effect. CyberPsychology & Behavior, 7, 321-326.

Widyanto, L. & Griffiths, M.D. (2006). Internet addiction: A critical review. International Journal of Mental Health and Addiction, 4, 31-51.

Widyanto, L. & Griffiths, M.D. (2009). Unravelling the Web: Adolescents and Internet Addiction. In R. Zheng, J. Burrow-Sanchez & C. Drew (Eds.), Adolescent Online Social Communication and Behavior: Relationship Formation on the Internet. pp. 29-49. Hershey, Pennsylvania: Idea Publishing.