Decision-Making and Prepotent Response Inhibition Functions in Excessive Internet Users

作者：Delin Sun, Zu-Ji Chen, Ning Ma, Xiaochu Zhang, Xianming Fu, Daren Zhang · 发表于：CNS Spectrums · 年份：2009 · DOI：10.1017/s1092852900000225 · 被引用次数：142 · 研究领域：Impact of Technology on Adolescents、Gambling Behavior and Treatments、Substance Abuse Treatment and Outcomes

INTRODUCTION: Excessive Internet use (EIU), also described as Internet addiction or pathological Internet use, has already become a serious social problem around the world. Some researchers consider EIU as a kind of behavioral addiction. However, there are few experimental studies on the cognitive functions of excessive Internet users (EIUers) and limited data are available to compare EIU with other addictive behaviors, such as drug abuse and pathological gambling. METHODS: In the present study, we examined EIUers' functions of decision-making and prepotent response inhibition. Two groups of participants, EIUers and controls, were compared on these two functions by using a Gambling Task and a Go/no-go Task, respectively. RESULTS: Compared with controls, EIUers selected significantly less net decks in the Gambling Task (P=.007). Furthermore, the EIUers made progress in selecting strategy, but more slowly than did the control group (EIUers, chunk 3 > chunk 1, P<.001; controls, chunk 2 > chunk 1, P<.001). Interestingly, EIUers' accuracy during the no-go condition was significantly higher than that of controls (P=.018). CONCLUSION: These results showed some similarities and dissimilarities between EIU and other addictive behaviors such as drug abuse and pathological gambling. The findings from the Gambling Task indicated that EIUers have deficits in decision-making function, which are characterized by a strategy learning lag rather than an inability to learn from task contingenci...