Tourists at the Koorana Saltwater Crocodile Farm in Coowonga, Queensland, Australia, including 62 males and 41 females, aged 18–66 (M = 34.2, SD = 13.3), were randomly assigned to play a laptop-simulated Electronic Gaming Machine (EGM) either: (1) prior to entry, or (2) after having held a 1-m saltwater-crocodile. Gambling behavior; including bet-size, speed of betting, final payouts and trials played on the EGM; was investigated with respect to participants’ assigned arousal condition, problem-gambling status, and affective state. At-risk gamblers with few self-reported negative emotions placed higher average bets at the EGM after having held the crocodile when compared to the control. In contrast, at-risk gamblers with many self-reported negative emotions placed lower average bets at the EGM after having held the crocodile. The results suggest that high arousal can intensify gambling in at-risk players, but only if this feeling state is not perceived as a negative emotion.
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Blaszcvznski, A., & Nower, L. (2002). A pathway model of problem and pathological gambling. Addiction, 97, 487–499.
Brown, S. L., Rodda, S., & Phillips, J. G. (2004). Differences between problem and nonproblem gamblers in subjective arousal and affective valence amongst electronic gaming machine players. Addictive Behaviors, 29(9), 1863–1867.
Dickerson, M., Cunningham, R., England, S. L., & Hinchy, J. (1991). On the determinants of persistent gambling: III. Personality, prior mood, and poker machine play. International Journal of the Addictions, 26(5), 531–548.
Dutton, D. G., & Aron, A. P. (1974). Some evidence for heightened sexual attraction under conditions of high anxiety. Journal of Personality and Social Psychology, 30(4), 510–517.
Ferris, J., & Wynne, H. (2001). The Canadian problem gambling index: Final report. Ottawa: Canadian Centre on Substance Abuse.
Hull, C. L. (1952). A behavior system: An introduction to behavior theory concerning the individual organism. New Haven, CT: Yale University Press.
Leary, K., & Dickerson, M. (1985). Levels of arousal in high- and low-frequency gamblers. Behaviour Research and Therapy, 23(6), 635–640.
Manstead, A. S., & Wagner, H. L. (1981). Arousal, cognition and emotion: An appraisal of two-factor theory. Current Psychological Reviews, 1(1), 35–54.
McConaghy, N. (1980). Behavior completion mechanisms rather than primary drives maintain behavioral patterns. Activas Nervosa Superior (Praha), 22(2), 138–151.
Moodie, C., & Finnigan, F. (2005). A comparison of the autonomic arousal of frequent, infrequent and non-gamblers while playing fruit machines. Addiction, 100(1), 51–59.
Rockloff, M. J. (2008). The impact of self-awareness and physiological arousal on EGM gambling behaviour. Brisbane, QLD: Office of Liquor, Gaming and Racing.
Rockloff, M., & Dyer, V. (2006). The four Es of problem gambling: A psychological measure of risk. Journal of Gambling Studies, 22(1), 101–120.
Rockloff, M., & Dyer, V. (2007). An experiment on the social facilitation of gambling behavior. Journal of Gambling Studies, 23(1), 1–12.
Rockloff, M., Signal, T., & Dyer, V. (2007). Full of sound and fury, signifying something: The impact of autonomic arousal on EGM gambling. Journal of Gambling Studies, 23(4), 457–465.
Schachter, S., & Singer, J. (1962). Cognitive, social, and physiological determinants of emotional state. Psychological Review, 69, 379–399.
Sharpe, L. (2004). Patterns of autonomic arousal in imaginal situations of winning and losing in problem gambling. Journal of Gambling Studies, 20(1), 95–104.
Spence, J. T., & Spence, K. W. (1966). The motivational components of manifest anxiety: Drive and drive stimuli. In C. D. Spielberger (Ed.), Anxiety and behavior. New York: Academic Press.
Spence, K. W., Farber, I. E., & McFann, H. H. (1956). The relation of anxiety (drive) level to performance in competitional and noncompetitional paired-associated learning. Journal of Experimental Psychology, 52, 296–305.
Watson, D., Clark, L. A., & Tellegen, A. (1988). Development and validation of brief measures of positive and negative affect: The PANAS scales. Journal of Personality and Social Psychology, 54(6), 1063–1070.
Zajonc, R. B. (1965). Social facilitation. Science, 149(3681), 269–274.
This research was supported by a grant from the Queensland Treasury Department, Australia.
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Rockloff, M.J., Greer, N. Never Smile at a Crocodile: Betting on Electronic Gaming Machines is Intensified by Reptile-Induced Arousal. J Gambl Stud 26, 571–581 (2010). https://doi.org/10.1007/s10899-009-9174-4
- Pathological gambling
- Physiological arousal
- Sensation seeking