It is imperative that fundamental psychological components should be managed to control the betting behavior of Internet gamblers, and to reduce the risk of gambling addiction. The purpose of this study was to construct a model focusing on gambling related cognition(irrational beliefs) and negative emotions(depression and anxiety) and to verify the model by collecting longitudinal data, representing real world gambling behavior. To collect real world Internet gambling behavior data, we worked with 'S Company', which is the only legally operating gambling Internet site in Korea. The company provided us with data from 550 people that have been on the Internet more than once a month. Short-term data were collected by linking “self-report” data on cognition/emotion and “actual behavior (monthly number of bets and amount of money)” for six months. Before testing the model, we analyzed from various perspectives if the six-month behavioral change aspects revealed increased or decreased linear changes or if it concluded in changes revealing latent class, but it was invalid. Therefore, we tested the model by setting the average of the real life behavior(amount) measurement by period as the dependent variable, the gambling-related cognitive as the independent variable, and the negative emotion as the moderator variable. As a result, the primary effect of dysfunctional cognition on real life Internet gambling behavior was significant, which was moderated by depressive emotions. In other words, a person with a high level of depression revealed a greater effect of promoting dysfunctional gambling cognition, especially the effect of “wrong perception of randomness” and “belief that it is impossible to control”. We discuss results of this study relative to implications of coping with Internet gambling issues.
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