Monthly Archives: October 2017
According to Dr. Anil Aggrawal in his 2009 book Forensic and Medico-legal Aspects of Sexual Crimes and Unusual Sexual Practices nyctophilia is a sexual paraphilia where the individual derives sexual pleasure and arousal by a “love of night”. In the same book, Aggrawal defines similar (if not the same conditions) including scotophilia (“turned on by darkness”), lygophilia (“love of darkness”) and achluophilia (“arousal from darkness”). Another related condition is arguably amaurophilia (“arousal by a partner who is blind or unable to see due to artificial means such as being blindfolded or having sex in total darkness”, a paraphilia that I examined in depth in a previous blog). Other sources (such as Dr. Brenda Love’s Encyclopedia of Unusual Sex Practices doesn’t mention any of these, apart from amaurophilia) whereas other medical dictionaries conflate darkness and night together and define nyctophilia as a “preference for the night or darkness. Also called scotophilia”.
As far as I can ascertain, there is no empirical research on this topic at all. There are many references to the similar sounding scopophilia (viewed by many as another term for ‘voyeurism’) but as Dr. Aggrawal notes:
“Several terms have been used as synonyms of voyeurism, although some writers have constantly pointed out subtle differences. The terms scopophilia and scoptophilia are taken as synonyms to voyeurism by most writers. However, others have pointed out a minor difference. If the victim is unsuspecting and non-consenting, the act is voyeurism, but if the other party is consenting, the act is scopophilia or scoptophilia. Furthermore, if the person watched is in the act of disrobing, or nude, the act is voyeurism, but if the person watched is engaged in sex, the act is either mixoscopia (if the watched person is the voyeur’s lover) or allopellia (if the watched persons are complete strangers)”.
The reason I mention this is because in a paper by Dr. Patrick Mahony on voyeurism in a 1989 issue Journal of the American Psychoanalytic Association noted that the “alternate spelling scoptophilia, preferred by some of the older German psychoanalysts, must not be confused with scotophilia or love of darkness”. This appears to have happened in other academic papers I found directly referring to ‘scotophilia’. For instance, one paper dating back almost 70 years was that of Dr. F.S. Caprio who wrote a paper entitled ‘Scotophilia–exhibitionism: A case report’ in the Journal of Clinical and Experimental Psychopathology but it was actually a paper about voyeurism. More specifically, the paper reported the cases of a mother and son who constantly watched residents for sexual arousal in the mother’s rooming house via drilled holes in the wall. A 1966 theoretical review paper by Dr. Jerome Sattler on embarrassment and blushing published in the Journal of Social Psychology claimed that “stage-fright and erythrophobia [fear of blushing] are not simply expressions of the warding off of heightened exhibitionism and scotophilia but also develop as a result of previous instinctual conflict”. Here again, scotophilia appears to be a synonym for voyeurism rather than a sexual love of darkness.
I was pleasantly surprised to find dozens of references to nyctophilia in the scientific literature but the overwhelming majority of papers were biological in origin and all referred to non-human species. For instance, a recent 2016 paper Dr. Luis Espinasa and colleagues in the journal Subterranean Biology reported that cave amphipods are eyeless troglobitic crustaceans found in caves located in the Northeastern (Allegheny) region of the United States and who “exhibit nyctophilia” (literally meaning they love darkness, and has absolutely nothing sexual whatsoever).
I only managed to find one non-biological academic reference on nyctophilia and this was a 1994 paper by Dr. Lewis Lawson in the journal Papers on Language and Literature. In actuality, the use of the word ‘nyctophilia’ was mentioned in passing and noted that the term was defined by psychoanalyst Bertram Lewin as “an erotic pleasure in darkness, which enters as a wish-fulfillment element on fantasies of being in the ‘womb,’ or more properly, as the German word Mutterlieb suggests, of being in the mother’s body”. I was unable to track down the original source so I don’t know the context in which Lewin used the word but the definition is certainly used in a sexual sense rather than the general ‘love of darkness’ used in the biologically-based papers.
In a more general search on the internet, located dedicated photographic sites for nyctophilia, a number of fictional books with the title of Nyctophilia (such as the novel by Welsh author K.A. Hambly), and even the name of a 2014 film (although details about it are sketchy to say the least). I also came across one first-person account of nyctophilia online from someone who has written a number of different articles about the condition such as ‘What is nyctophilia?’, ‘What is it like to have nytophilia?’ and ‘Everything you wanted to know about nyctophilia symptoms’. However, detailed reading of these articles suggests that any sexual element is secondary to a general love of darkness. Here are a few extracts from the articles:
Extract 1: “I have a confession to make. I am a nyctophiliac…Well, a lot of people have told me that I am an insomniac. An insomniac is someone who has difficulty sleeping at night. But I have realized over time that I am not just an insomniac. Insomnia is a physical condition, not a psychological one. Nyctophilia, on the other hand, is purely a psychological condition. Many say that nyctophiliacs are sexually aroused by the dark. Is that true? Well, yes and no. I like darkness, but I am not always sexually aroused by it. I just love it for what it is. It gives me a sense of relief and it makes me happy”.
Extract 2: “To help you understand nyctophilia symptoms, [here] I reveal some uncomfortable details of my life. Every night, I try to sleep at 10 pm. I take sleeping pills such as Klonopin and get myself a good book to read. When I do fall asleep, at around 10:30 pm or 10:45 pm, I find myself waking up at 12:00 am sharp, as fresh as the day, as though I’ve been asleep for 9 hours. I am wide awake at this time and no matter what I do, I cannot go to sleep. Unlike an insomniac, who would turn the lights on and perhaps watch TV, that’s the last thing on my mind. I just want to sit in the bedroom chair in the dark, all alone, with just darkness as my company. I love the darkness. It makes me happy. I feel a sense of relief as I sit in the dark and listen to the sound of the clock ticking by. I know it’s not good for me to stay awake like this, like a ghost, in complete darkness. I tell that to myself several times and often I try my very best to sleep. That is when I get those dreams. Those horrible dreams. The nightmares. I find myself in impossible situations, either getting tortured like Mel Gibson in Braveheart or dying of a dreadful disease, like a child affected by the Ebola virus in Africa”.
Extract 3: “There isn’t much of an awareness of nyctophilia, or nyctophilia symptoms, out there on the Web…The UrbanDictionnary.com defines nyctophilia as ‘The love of darkness or night, or feeling like you belong in the dark” and adds that the condition ‘usually applies to those who often feel sadness!’ Nyctophilia is a condition that makes you want to sit in the dark all by yourself late at night, wide awake…You may wander off late at night in the dark. This will get you in trouble with the authorities, who do not really understand the nyctophilia meaning and cannot even comprehend how you feel. So you may get mistaken for a sex addict or a pervert, or possibly a criminal. Your neighbors would avoid you and report you to the law enforcement agencies. They would want you to leave the neighborhood and move somewhere else. They would feel distinctly uncomfortable about your condition and word would get around about the fact that you stay up all night in the dark, basically doing nothing”.
Extract 4: “There are many who say that nyctophialiacs find darkness sexually arousing. They compare the condition to a form of sex addiction. Indeed, have been given medication for sex addiction, such as GnRH, a long lasting gonadotropin releasing hormone that suppresses sexual desires. If you feel that you have any of the nyctophilia symptoms…it is important to get yourself treated by a qualified psychiatrist, preferably someone who has experience of working with modern or unusual psychiatric conditions. Take the medications that are suggested to you and ask support from your friends and family”
In all the reading I have done on this topic, there appears to be very little genuine evidence that scotophilia and nyctophilia exist, and if the condition does exist, few people appear to suffer major problems as a consequence, unless their love of the dark leaves the person feeling so sleep-deprived that it interferes with their day-to-day functioning. Maybe this condition is a sub-type of insomnia but that the underlying reasons for not going to sleep are very different from the usual reasons for not being able to sleep.
Dr. Mark Griffiths, Professor of Behavioural Addiction, International Gaming Research Unit, Nottingham Trent University, Nottingham, UK
Aggrawal A. (2009). Forensic and Medico-legal Aspects of Sexual Crimes and Unusual Sexual Practices. Boca Raton: CRC Press.
Caprio, F. S. (1949). Scoptophilia, exhibitionism; a case report. Journal of Clinical and Experimental Psychopathology, 10(1), 50-72.
Espinasa, L., Collins, E., Finocchiaro, A., Kopp, J., Robinson, J., & Rutkowski, J. (2016). Incipient regressive evolution of the circadian rhythms of a cave amphipod. Subterranean Biology, 20, 1-13.
Love, B. (1992). Encyclopedia of Unusual Sex Practices. Fort Lee, NJ: Barricade Books.
Lawson, L. A. (1994). The dream screen in The moviegoer. Papers on Language and Literature, 30(1), 25.
Mahony, P. J. (1989). Aspects of nonperverse scopophilia within an analysis. Journal of the American Psychoanalytic Association, 37(2), 365-399.
Sattler, J. M. (1966). Embarrassment and blushing: A theoretical review. Journal of Social Psychology, 69(1), 117-133.
Recently, I did an interview with a journalist about ‘love bombing’ described by her as a new phenomenon occurring in online dating and is “when someone showers you with attention, promising the world but when you respond they go cold and stop responding”. However, there is nothing new about ‘love bombing’ because the term has been around since the 1970s except it has traditionally been described as a practice by religious organisations and cults in relation to the indoctrination of new recruits. According to a number of different sources, the term ‘love bombing’ was coined by the Unification Church of the United States founded by Sun Myung Moon (and why individuals in the cult are often referred to as ‘Moonies’). A number of academics have written about ‘love bombing’ within cult movements. For instance, Thomas Robbins in a 1984 issue of the journal Social Analysis noted that:
“Many elements involved in controversies over alleged cultist brainwashing entail trans-valuational conflicts related to alternative internal vs. external perspectives. The display of affection toward new and potential converts (‘love bombing’), which might be interpreted as a kindness or an idealistic manifestation of devotees’ belief that their relationship to spiritual truth and divine love enables them to radiate love and win others to truth, is also commonly interpreted as a sinister ‘coercive’ technique (Singer, 1977)”.
In a 2002 issue of the journal Human Relations, Dennis Tourish and Ashly Pinnington wrote that the practice of ‘love bombing’ is derived from the interpersonal perception literature and is a form of ‘ingratiation’ (taken from Edward Jones’ 1964 book of the same name). They then cite from Jones’ 1990 book Interpersonal Perception:
“There is little secret or surprise in the contention that we like people who agree with us, who say nice things about us, who seem to possess such positive attributes as warmth, understanding, and compassion, and who would ‘go out of their way’ to do things for us”.
Tourish again (this time with Naheed Vatcha) in a 2005 issue of the journal Leadership noted that cults use ‘love bombing’ as an emotionally draining recruitment strategy and that it is a form of positive reinforcement. More specifically, they noted that:
“Cults make great ceremony of showing individual consideration for their members. One of the most commonly cited cult recruitment techniques is generally known as ‘love bombing’ (Hassan, 1988). Prospective recruits are showered with attention, which expands to affection and then often grows into a plausible simulation of love. This is the courtship phase of the recruitment ritual. The leader wishes to seduce the new recruit into the organization’s embrace, slowly habituating them to its strange rituals and complex belief systems. At this early stage resistance will be at its highest. Individual consideration is a perfect means to overcome it, by blurring the distinctions between personal relationships, theoretical constructs and bizarre behaviors”.
More recently, the practice of ‘love bombing’ has been used in other contexts such by gang leaders or pimps as a way of controlling their victims (as outlined in the 2009 book Gangs and Girls: Understanding Juvenile Prostitution by Michel Dorais and Patrice Corriveau), and within the context of everyday dating and online dating. One article that has been cited a lot in the press relating to the use of ‘love bombing’ in day-to-day relationships is a populist article written for Psychology Today by Dr. Dale Archer. He noted that:
“Notorious cult leaders Jim Jones, Charles Manson, and David Koresh weaponized love bombing, using it to con followers into committing mass suicide and murder. Pimps and gang leaders use love bombing to encourage loyalty and obedience as well”.
Dr. Archer says that ‘love bombing’ works because “humans have a natural need to feel good about who we are, and often we can’t fill this need on our own”. He says that there are times of high susceptibility to being ‘love bombed’ such as losing a job or going through a divorce. Irrespective of why or where the susceptibility has arisen, Archer claims that love bombers “are experts at detecting low self-esteem, and exploiting it”. He then goes on to claim that:
“The paradox of love bombing is that people who use it aren’t always seeking targets that broadcast insecurity for all to see. On the contrary, the love bomber is also insecure, so to boost their ego, the target must at least seem like a great “catch.” Maybe she’s the beautiful woman, who’s lonely because her beauty intimidates people, or he’s the guy with the great career whose wife left him for his best friend, or she’s the hard-nosed businesswoman, who’s avoided marriage and motherhood because her childhood was so traumatic. On paper, these folks are attractive, but something makes them doubt their own value. Along comes the love bomber to shower them with affection and attention. The dopamine rush of the new romance is vastly more powerful than it would be if the target had a healthy self-esteem, because the love bomber fills a need the target can’t fill on her own”.
My own expertise on ‘love bombing’ is limited (to say the least). However, I did attempt to answer the questions I was asked, and here are my verbatim replies.
It seems like [‘love bombing’] quite an addictive and compulsive behaviour – what do you make of it?
There is no evidence that love bombing is either addictive or compulsive and is simply a specific behaviour that although may be repetitive and habitual is not something that would be done compulsively (because the love bombing is planned and focused) or addictively (because love bombing not something that they would do that compromises everything else in their life).
Are there any psychological reasons why people behave like this?
I don’t know of any psychological research that has been done on love bombing but the concept is not new as it has been in the academic literature since the 1970s in relation to indoctrinating individuals into religious cults. Love bombing is a manipulative strategy to make individuals more emotionally pliable. My guess is that in a relationship setting (rather than a cult setting) the individuals engaged in love bombing are likely to be egomaniacs and/or narcissists who like to feel dominant and powerful and/or love psychologically humiliating others.
In my experience, and according to some of the people I’ve interviewed who are guilty of ‘love bombing’ – they do it to multiple people at once.
If love bombing is part of an individual’s behavioural repertoire there is no reason why they wouldn’t do it with more than one person at the same time. However, I don’t know of any research that has shown this to be the case but it wouldn’t surprise me if some individuals were unfaithful love bombers (but I’m sure there are serial love bombers who just do it from one relationship to the next without being physically or emotionally unfaithful).
Is it to straightforward to blame tech for such behaviours – is it just an amplification of behaviours people already exhibit in real life? The temptation always seems to be to blame it on the internet.
The internet tends to facilitate pre-existing problematic behaviour rather than cause it. However, it is well known that the internet is a disinhibiting medium and that individuals lower their psychological guard online. In the case of relationships, the perceived anonymity of being online means that individuals reveal things about themselves, often very private things, because the medium is non-face-to-face, non-threatening, non-alienating and non-stigmatising. Individuals can develop deep emotional relationships online without even having met the other person because of the internet’s disinhibiting properties. Consequently, online methods of communication are another tool in love bomber’s armoury in (initially) showering their professed love for somebody and can happen 24/7 (something which couldn’t have happened in the days prior to online ubiquity).
Where and how, if at all, does this sort of problematic behaviour intersect with sex and love addiction?
I don’t see any overlaps between ‘love bombing’ and sex addiction as they are two completely different constructs and have completely different underlying motivations with little in the way of crossover. Obviously, love bombing could be used as a method to increase the likelihood of sex (because flattery goes a long way). However, if the ultimate goal is psychological control of another person’s emotions, sex is simply a by-product of love bombing rather than the main goal.
Anything else you would like to add?
As far as I can tell, there has never been any empirical research on ‘love bombing’ within the context of dating so all my responses to the questions I was asked are speculative. However, I do think this is an area that would benefit from scientific investigation given how important personal relationships are within our lives. At the very least such research might uncover the signs and strategies that ‘love bombers’ typically use and might prevent a lot of emotional pain felt by individuals not rushing head first (or should that be heart first?) into such relationships in the first place.
Dr. Mark Griffiths, Professor of Behavioural Addiction, International Gaming Research Unit, Nottingham Trent University, Nottingham, UK
Archer, D. (2017). The manipulative partner’s most devious tactic. Psychology Today, March 6. Located at: https://www.psychologytoday.com/blog/reading-between-the-headlines/201703/the-manipulative-partners-most-devious-tactic
Dorais, M. & Corriveau, P. (2009). Gangs and Girls: Understanding Juvenile Prostitution. Montreal: McGill-Queen’s Press.
Griffiths, M.D. (2000). Cyber affairs – A new area for psychological research. Psychology Review, 7(1), 28-31.
Griffiths, M.D. (2000). Excessive internet use: Implications for sexual behavior. CyberPsychology and Behavior, 3, 537-552.
Griffiths, M.D. (2001). Sex on the internet: Observations and implications for sex addiction. Journal of Sex Research, 38, 333-342.
Griffiths, M.D. (2012). Internet sex addiction: A review of empirical research. Addiction Research and Theory, 20, 111-124.
Hassan, S. (1988) Combating Cult Mind Control. Rochester: Park Press.
James, O. (2012). Love bombing: Reset your child’s emotional thermostat. London: Karnac Books.
Jones, E. (1964). Ingratiation. New York: Appleton-Century-Crofts
Jones, E. (1990). Interpersonal Perception. New York: WH Freeman.
Robbins, T. (1984). Constructing cultist “mind control”. Sociological Analysis, 45(3), 241-256
Singer, M. (1977). Therapy with ex-cultists. National Association of Private Psychiatric Hospitals Journal, 9(4), 15-18.
Tourish, D., & Pinnington, A. (2002). Transformational leadership, corporate cultism and the spirituality paradigm: An unholy trinity in the workplace? Human Relations, 55(2), 147-172.
Tourish, D., & Vatcha, N. (2005). Charismatic leadership and corporate cultism at Enron: The elimination of dissent, the promotion of conformity and organizational collapse. Leadership, 1(4), 455-480.
Wikipedia (2017). Love bombing. Located at: https://en.wikipedia.org/wiki/Love_bombing
Unwanted visual intrusions are characteristic of Post-Traumatic Stress Disorder (PTSD). According to Dr. Emily Holmes and her colleagues in a 2009 paper in the journal PLoS ONE, one innovative intervention for inhibiting unwanted intrusions is playing the Tetris videogame, described as a ‘cognitive vaccine’ in preventing intrusions after traumatic events. Playing Tetris consumes heavy visuospatial working memory resources that potentially compete with cognitive resources required for elaboration of visual imagery. Since Holmes and colleagues’ study, other studies have used Tetris to inhibit intrusive imagery including more studies by Holmes and her colleagues and others by Ella James’ research group, as well as some innovative studies using Tetris to reduce drug cravings by Jessica Storka-Brown and her colleagues (see ‘Further reading’ below). However, none of these studies assessed the role of videogame content after playing in relation to Game Transfer Phenomena (GTP), an area that we have carried out a lot of research into (see ‘Further reading’ below).
GTP research has investigated non-volitional experiences (e.g., altered sensorial perceptions and automatic mental processes/behaviours) mostly experienced after gaming. Gamers often report sensorial (visual/auditory) intrusions after playing (e.g., visual and auditory imagery, hallucinations). In a survey of 2,362 gamers that we published in a 2016 issue of the International Journal of Human-Computer Interaction, most (77%) had visualized images from a variety of videogames (including tile-puzzle games) with closed-eyes, and one-third (31%) had visualized images with open-eyes. Other studies have experimentally induced videogame-related visualizations at sleep onset (including studies by Stickgold and colleagues , Wamsley and colleagues , Kusse and colleagues  – see ‘Further reading’).
James and colleagues’ 2015 study in the journal Psychological Science was the first to make explicit reference to GTP (referred to as the ‘Tetris effect’ [TE]). In 2012, we argued the TE term is misleading as it suggests repetition is the core of transfer effects. However, other factors are involved. Research concerning GTP makes the distinction between sensorial modalities facilitating non-volitional phenomena with videogame content that occur along the continuum from mild to severe. Moreover, the descriptive constructs of GTP are empirically based on our analysis of 3,500+ gamers and have been examined via confirmatory factor analysis demonstrating good reliability and validity.
James and her colleagues tested if playing Tetris offered a protective mechanism against re-experiencing traumatic events. Healthy participants (n=56) were randomly assigned to either playing Tetris for 11 minutes, or doing nothing before exposure to a 12-minute traumatic film. Image-base memories about the film were then registered in a one-week dairy. However, playing Tetris as a proactive interference task before watching the film did not show significant results. James and colleagues offered different explanations including: (i) duration of the task in relation to film length, (ii) temporal contingencies between the tasks, (iii) differences between the task types, (iv) videogame types used, and (v) reactivation of gameplay during the film for aided interference. In a commentary paper published in a 2016 issue of Frontiers in Psychology, we discussed these findings and some of its shortcomings in relation to GTP literature.
- Duration of task in relation to film length: Playing Tetris for 11 minutes may not have been long enough to compete with the consolidation of memory of the 12-minute film. GTP are significantly more likely to occur when playing 3-6 hours. Our research reported only 4% of gamers reported GTP when playing sessions shorter than one-hour. Laboratory experiments have taken days of playing to induce game-related visualizations at sleep onset.
- Temporal contingencies between gaming and film watching: The tasks were performed minutes apart from each other. GTP mostly occur soon after stopping playing but our research has found that gamers have also reported GTP days after playing. In most cases, duration of experience is very short (seconds/minutes) but in some cases hours or longer.
- Differences between the tasks: Previous studies have demonstrated that similar tasks aid interference. However, watching a film is a passive activity while gaming is interactive requiring additional perceptual/motor skills. Therefore, it may be expected that gaming is more potent as interference task, particularly because inducing the subjective sense of presence in the virtual world may strengthen the interference.
- Type of videogame used as interference task and emotional content of film: The unrealistic (geometric) Tetris content may have been overwritten by the film’s traumatic images. Visualization of stereotypical games induced at sleep onset are characterized by lack of emotion, assuming that the amygdala and the reward system are not involved. In GTP research, emotions in tile-matching puzzle-games are incomparable to emotions in realistic videogames.
- Reactivation of gameplay during the film for aided interference: The use of cue reminders may have potential in reviving videogame content. In many cases, thoughts and altered perceptions are triggered by game-related cues. Selective attention toward game-related cues has been demonstrated in experiments. GTP have been reported in variety of videogame genres particularly those that have very realistic graphics and settings. Therefore, more realistic games may aid associations between real life stimuli and videogame content, and may be more effective in competing with memories of traumatic events.
In our Frontiers paper, we noted that playing Tetris is not only an effective visuospatial task (overloading working memory resources needed for imagery-formation while playing), but as demonstrated in our GTP studies, videogame content stays active after playing (e.g., mental imagery, sensory perceptions), and may offer additional benefits for managing unwanted intrusions. GTP may potentially strengthen effects of interference tasks but should be used cautiously, because videogame content not only targets unwanted intrusions, but also influences individual cognitions, perceptions, and behaviours in day-to-day contexts (e.g., attention bias, lack of task awareness, control inhibition failures). Moreover, our studies have shown distress and dysfunction have been reported with GTP.
Consequently, further research needs conducting to identify: (i) videogames that are most effective, (ii) playing duration, (iii) factors that reduce intervention efficacy and strategies to control them, and (iv) individuals that may benefit the most from such intervention. While using videogames as intervention tools for preventing unwanted imagery from traumatic experiences has potential, therapeutically it is still at an early stage.
- (Please note: This blog was co-written with Dr. Angelica Ortiz de Gortari and is based on an article we published in Frontiers in Psychology: Ortiz de Gortari, A.B. & Griffiths, M.D. (2016). Playing the computer game Tetris prior to viewing traumatic film material and subsequent intrusive memories: Examining proactive interference. Frontiers in Psychology, 7, 260. doi: 10.3389/fpsyg.2016.00260)
Dr. Mark Griffiths, Professor of Behavioural Addiction, International Gaming Research Unit, Nottingham Trent University, Nottingham, UK
Holmes, E. A., James, E. L., Kilford, E. J., & Deeprose, C. (2010). Key steps in developing a cognitive vaccine against traumatic flashbacks: Visuospatial Tetris versus Verbal Pub Quiz. PloS ONE, 5(11), e13706.
James, E. L., Bonsall, M. B., Hoppitt, L., Tunbridge, E. M., Geddes, J. R., Milton, A. L., & Holmes, E. A. (2015a). Computer game play reduces intrusive memories of experimental trauma via reconsolidation-update mechanisms. Psychological Science. doi: 10.1177/0956797615583071
James, E. L., Zhu, A. L., Tickle, H., Horsch, A., & Holmes, E. A. (2015b). Playing the computer game Tetris prior to viewing traumatic film material and subsequent intrusive memories: Examining proactive interference. Journal of Behavior Therapy and Experimental Psychiatry. doi: 10.1016/j.jbtep.2015.11.004
Kusse, C., Shaffii-Le Bourdiec, A., Schrouff, J., Matarazzo, L., & Maquet, P. (2012). Experience-dependent induction of hypnagogic images during daytime naps: A combined behavioural and EEG study. Journal of Sleep Research, 21(1), 10-20.
Ortiz de Gortari, A. B., Aronsson, K., & Griffiths, M. D. (2011). Game Transfer Phenomena in video game playing: A qualitative interview study. International Journal of Cyber Behavior, Psychology and Learning 1(3), 15-33.
Ortiz de Gortari, A. B., & Griffiths, M. D. (2012). An introduction to Game Transfer Phenomena in video game playing. In J. I. Gackenbach (Ed.), Video Game Play and Consciousness (pp. 223-250). Hauppauge, NY: Nova Publisher.
Ortiz de Gortari, A. B., & Griffiths, M. D. (2014a). Altered visual perception in Game Transfer Phenomena: An empirical self-report study. International Journal of Human-Computer Interaction, 30(2), 95-105.
Ortiz de Gortari, A. B., & Griffiths, M. D. (2014b). Auditory experiences in Game Transfer Phenomena: An empirical self-report study. International Journal of Cyber Behavior, Psychology and Learning 4(1), 59-75.
Ortiz de Gortari, A. B., & Griffiths, M. D. (2014c). Automatic mental processes, automatic actions and behaviours in Game Transfer Phenomena: An empirical self-report study using online forum data. International Journal of Mental Health and Addiction, 12(4), 1-21.
Ortiz de Gortari, A. B., & Griffiths, M. D. (2015a). Game Transfer Phenomena and its associated factors: An exploratory empirical online survey study. Computers in Human Behavior, 51, 195-202.
Ortiz de Gortari, A.B. & Griffiths, M.D. (2016). Prevalence and characteristics of Game Transfer Phenomena: A descriptive survey study. International Journal of Human-Computer Interaction, 32, 470-480.
Ortiz de Gortari, A.B., Oldfield, B. & Griffiths, M.D. (2016). An empirical examination of factors associated with Game Transfer Phenomena severity. Computers in Human Behavior, 64, 274-284.
Ortiz de Gortari, A. B., Pontes, H. M. & Griffiths, M. D. (2015). The Game Transfer Phenomena Scale: An instrument for investigating the nonvolitional effects of video game playing. Cyberpsychology, Behavior, and Social Networking 10, 588-594
Skorka-Brown, J., Andrade, J., & May, J. (2014). Playing ‘Tetris’ reduces the strength, frequency and vividness of naturally occurring cravings. Appetite, 76 , 161-165.
Skorka-Brown, J., Andrade, J., Whalley, B., & May, J. (2015). Playing Tetris decreases drug and other cravings in real world settings. Addictive Behaviors, 51, 165-170.
Stickgold, R., Malia, A., Maguire, D., Roddenberry, D., & O’Connor, M. (2000). Replaying the Game: Hypnagogic images in normals and amnesics. Science, 290(5490), 350-353.
Wamsley, E. J., Perry, K., Djonlagic, I., Reaven, L. B., & Stickgold, R. (2010). Cognitive replay of visuomotor learning at sleep onset: Temporal dynamics and relationship to task performance. Sleep, 1(33), 59-68.