ISSN 0439-755X
CN 11-1911/B
主办:中国心理学会
   中国科学院心理研究所
出版:科学出版社

心理学报 ›› 2012, Vol. 44 ›› Issue (11): 1523-1534.doi: 10.3724/SP.J.1041.2012.01523

• 论文 • 上一篇    下一篇

网络成瘾者的行为冲动性—— 来自爱荷华赌博任务的证据

徐四华   

  1. (广东商学院应用社会学与心理学系, 广州, 510320)
  • 收稿日期:2012-04-05 出版日期:2012-11-28 发布日期:2012-11-01
  • 通讯作者: 徐四华
  • 基金资助:

    国家社科基金(10CGL043)和广东商学院校级项目(09GL18001)资助。

Internet Addicts’ Behavior Impulsivity: Evidence from the Iowa Gambling Task

XU Si-Hua   

  1. (Department of Applied Sociology and Psychology, Guangdong University of Business Studies, Guangzhou, 510320, China)
  • Received:2012-04-05 Online:2012-11-28 Published:2012-11-01
  • Contact: XU Si-Hua

摘要: 以84名大学生为被试(网络成瘾和对照组被试各42名), 采用感觉寻求量表和爱荷华赌博任务(Iowa Gambling Task)范式比较两组被试在感觉寻求水平和决策行为反应模式方面的差异。结果发现, 与对照组被试相比, 网络成瘾者的感觉寻求总分和去抑制、厌恶单调及寻求激动和惊险三个分量表得分显著增加, 在IGT任务中优先选择收益和惩罚频率高的不利扑克牌, 其冒险的决策策略并没有随着决策次数的增加而改变。这表明网络成瘾者的决策功能受损并表现出“即时收益优先”的决策模式和对强化物潜在风险的高耐受性。

关键词: 风险决策, 网络成瘾, 人格, 爱荷华赌博测验, 冲动性

Abstract: Internet addiction, defined as a maladaptive use of the Internet, is estimated to occur in 8–13% of college students (Chou, Condron, & Belland, 2005). It has become a serious mental health issue worldwide because addicts are impaired in various behavioral aspects including social interactions and academic performance (Morahan-Martin & Schumacher, 2000; Scherer, 1997; Young, 1998). Some researchers consider Internet addiction as a kind of behavioral addiction. However, there are few experimental studies on the cognitive functions of Internet addicts and limited data are available to compare Internet addicts with other addictive behaviors, such as drug abuse and pathological gambling. In the present study, we examined internet addicts’ function of decision making. Two groups of participants, 42 Internet addicts (18~22 years old, 32 male, M = 19.79, SD = 1.14) and 42 controls (18~22 years old, 26 male, M = 19.71, SD = 1.13), were compared on the cognitive function and impulsivity by using a Chinese computerized versions of the IGT and Sensation Seeking Scale (SSS). In the IGT, subjects had to choose between four decks of cards. Unknown to the subjects, two piles offered larger short-term gains that are offset by greater risks of heavy losses, and hence were disadvantageous in the long run. The other two piles offered smaller short-term gains and a lower risk of loss that result in long-term maximization of the monetary payoff. The results of the present study showed that (1) compared with controls, sensation seeking of internet addicts was higher significantly, and internet addicts showed significantly higher scores on subscales of thrill and adventure seeking, disinhibition and boredom susceptibility, and they selected significantly less net decks in the Iowa Gambling Task. Furthermore, Internet addicts made no progress in selecting strategy along with the time course of the decision making. (2) reaction patterns for pure win-cards were consistent between Internet addicts and controls, however, the former still preferred to choose high win-cards in spite of potential high punishment whereas the latter tended to transform the direction of card selection after getting corresponding feedback to avoid potentially high risks. (3) Net scores of the IGT were not correlated with SSS. These results showed some similarities between Internet addiction and other addictive behaviors such as drug abuse and pathological gambling. The findings from the Iowa Gambling Task indicated that Internet addicts have deficits in decision making function, which are characterized by an immediate win-priority selection pattern and tolerance to high risk.

Key words: decision making, internet addiction, personality, Iowa Gambling Task, impulsivity