Decision making under ambiguity but not under risk is related to problem gambling severity
Decision making under ambiguity but not under risk is related to problem gambling severity
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DOI：
10.1016/j.psychres.2012.03.053
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发表时间：
2012-12-30
影响因子：
11.3
通讯作者：
Noel, Xavier
中科院分区：
文献类型：
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作者：
Brevers, Damien;Cleeremans, Axel;Noel, Xavier
本研究的目的是探讨问题赌博的严重程度和决策的情况下，在两个程度的不确定性（结果的概率是已知的：风险下的决策;结果的概率是未知的：决策下的模糊性）之间的关系。为此，我们招募了65名赌徒不同的问题赌博的严重程度和35个正常对照。采用爱荷华州赌博任务（IGT）和打牌任务（CPT）对模糊决策进行评估。风险下的决策进行了评估与硬币翻转任务（CFT）和杯子任务。此外，我们还对工作记忆的两个组成部分（言语存储和双重任务）进行了检查。结果表明，问题赌徒表现比正常控制模糊和风险决策。较高的问题赌博严重性分数与模糊决策任务（IGT和CPT）的表现较差相关，但与风险决策无关。此外，我们发现，双任务绩效与风险下的决策（CFT和Cups任务）呈正相关，但与模糊下的决策（IGT和CPT）无关。这些结果表明，在不确定的条件下的问题赌徒的决策障碍可能是一个重要的神经认知机制，在维护他们的问题赌博。(C)2012爱思唯尔爱尔兰有限公司保留所有权利。
The aim of the present study was to examine the relationship between problem gambling severity and decision-making situations that vary in two degrees of uncertainty (probability of outcome is known: decision-making under risk; probability of outcome is unknown: decision-making under ambiguity). For this purpose, we recruited 65 gamblers differing in problem gambling severity and 35 normal controls. Decision-making under ambiguity was assessed with the Iowa Gambling Task (IGT) and the Card Playing Task (CPT). Decision-making under risk was assessed with the Coin Flipping Task (CFT) and the Cups Task. In addition, we included an examination of two working memory components (verbal storage and dual tasking). Results show that problem gamblers performed worse than normal controls on both ambiguous and risky decision-making. Higher problem gambling severity scores were associated with poorer performance on ambiguous decision-making tasks (IGT and CPT) but not decision-making under risk. Additionally, we found that dual task performance correlated positively with decision-making under risk (CFT and Cups tasks) but not with decision-making under ambiguity (IGT and CPT). These results suggest that impairments in decision-making under uncertain conditions of problem gamblers may represent an important neurocognitive mechanism in the maintenance of their problem gambling. (C) 2012 Elsevier Ireland Ltd. All rights reserved.