A consistent attentional bias for drug-related material in active cocaine users across word and picture versions of the emotional Stroop task
A consistent attentional bias for drug-related material in active cocaine users across word and picture versions of the emotional Stroop task
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DOI：
10.1016/j.drugalcdep.2005.07.002
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发表时间：
2006-02-28
影响因子：
4.2
通讯作者：
Garavan, H
中科院分区：
文献类型：
--
作者：
Hester, R;Dixon, V;Garavan, H
来自许多药物滥用人群的证据表明，可以在长期使用者中发现对药物相关刺激的注意力偏差。尽管越来越多的证据表明可卡因相关线索的显著性和强化特性，但这种效应尚未在可卡因使用者中得到可靠的证明。本研究的目的是管理字（模仿的版本，成功地识别酒精滥用者的注意力偏差）和图片版本的情绪Stroop任务，以衡量可卡因特定的注意力偏差的可靠性，跨刺激域。比较活跃的可卡因用户（n = 23），他们的年龄和教育匹配的控制显示可卡因相关的图片和文字的用户显着的偏见。这种注意力偏差不能归因于混杂因素，如可卡因用户的反应速度减慢，可卡因相关的材料共享类别所有权，或在本研究中使用的可卡因相关的材料一般引起所有参与者。不同类别的刺激的比较表明，可卡因用户有一个非常相似的水平的困难控制他们的注意力对可卡因相关的材料和不一致的colOUR字刺激，后者是传统的注意力控制措施从Stroop任务。这些结果为认知偏差是物质依赖的标志提供了确凿的证据。(c)2005爱思唯尔爱尔兰有限公司保留所有权利。
Evidence from a number of drug-abuse populations suggests that an attentional bias for drug-related stimuli can be identified in chronic users. Such an effect has yet to be reliably demonstrated in cocaine users, despite mounting evidence of the salience and reinforcing properties of cocaine-related cues. The aim of the current study was to administer word (modeled on the versions shown to successfully identify attentional biases in alcohol abusers) and picture versions of the emotional Stroop tasks to gauge the reliability of cocaine-specific attentional biases across stimuli domains. A comparison of active cocaine users (n = 23), and their age and education matched controls revealed a significant bias for cocaine-related pictures and words in users. This attentional bias could not be attributed to confounding factors such as slowed response speed of cocaine users, cocaine-related material sharing category ownership, or that the cocaine-related material used in the current study was generally arousing for all participants. A comparison of the different classes of stimuli indicated that cocaine users had a very similar level of difficulty controlling their attention towards both cocaine-related material and incongruent-colOUr word stimuli, the latter being the traditional measure of attentional control from the Stroop task. These results provide corroborating evidence for cognitive biases being a hallmark of substance dependence. (c) 2005 Elsevier Ireland Ltd. All rights reserved.