Background and aims: Cybersex addiction is discussed controversially, while empirical evidence is widely missing. With respect to its mechanisms of development and maintenance Brand et al. (2011) assume that reinforcement due to cybersex should lead to the development of cue-reactivity and craving explaining recurrent cybersex use in the face of growing but neglected negative consequences. To support this hypothesis, two experimental studies were conducted. Methods: In a cue-reactivity paradigm 100 pornographic cues were presented to participants and indicators of sexual arousal and craving were assessed. The first study aimed at identifying predictors of cybersex addiction in a freely recruited sample of 171 heterosexual males. The aim of the second study was to verify the findings of the first study by comparing healthy (n = 25) and problematic (n = 25) cybersex users. Results: The results show that indicators of sexual arousal and craving to Internet pornographic cues predicted tendencies towards cybersex addiction in the first study. Moreover, it was shown that problematic cybersex users report greater sexual arousal and craving reactions resulting from pornographic cue presentation. In both studies, the number and subjective quality of real-life sexual contacts were not associated to cybersex addiction. Discussion: The results support the gratification hypothesis, which assumes reinforcement, learning mechanisms, and craving to be relevant processes in the development and maintenance of cybersex addiction. Poor or unsatisfying sexual real-life contacts cannot sufficiently explain cybersex addiction. Conclusions: Positive reinforcement in terms of gratification plays a major role in cybersex addiction.

Game research increasingly addresses human factors of gaming. Though more and more seniors become players, game design for frail elderly has rarely been explored. This paper addresses game design for senior citizens experiencing age-related changes, especially cognitive and physical limitations. We introduce and evaluate the case study SilverPromenade, which is specifically aimed at providing institutionalized frail elderly with a new leisure activity. SilverPromenade allows players to go on virtual walks while accounting for special needs regarding game complexity, and simplistic interaction paradigms are provided using Nintendo's Wii Remote and the Balance Board for game control. Evaluation results suggest that despite age-related impairments, the game was generally accessible to elderly persons. Yet, differences between inexperienced and experienced players were observed which suggest that interaction problems may be reduced by engaging with games over a longer time. Findings also indicate that the engagement of elderly players transcends into their everyday life, and their social interaction increases among one another. Most importantly, the evaluation showed that games were perceived as enjoyable leisure activity, supporting the approach of applying digital games to raise the quality of life among frail elderly by fostering activity.

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