Friedman Ronald S, McCarthy Denis M, Bartholow Bruce D, Hicks Joshua A
Department of Psychology, University at Albany, State University of New York, Albany, NY 12222, USA.
Exp Clin Psychopharmacol. 2007 Feb;15(1):102-14. doi: 10.1037/1064-1297.15.1.102.
Experimental research and popular belief suggest that, among its many effects, alcohol consumption reduces tension and facilitates aggression. Such observations could result from direct, pharmacological effects of alcohol on neural control of behavior but also may be accounted for by positing that drinking behavior activates mental representations of relaxation-related or aggression-related alcohol expectancies in long-term memory. Building on this latter view, in 2 experiments, the authors investigated whether rudimentary drinking-related cues, which presumably activate encoded alcohol expectancies, facilitate tension reduction and hostility in the complete absence of actual or placebo alcohol consumption. In Experiment 1, following contextual exposure to alcohol-related words, individuals with stronger expectancies that drinking reduces tension showed an increased willingness to meet with an opposite-gender stranger under relatively anxiety-provoking circumstances, suggesting that they experienced less apprehension regarding the meeting. Analogously, in Experiment 2, following near-subliminal exposure to alcohol-related words, individuals with stronger expectancies that drinking fosters aggression showed greater hostility toward a target person following an experimentally engineered provocation. Neither of the latter effects was obtained following exposure to nonalcoholic beverage words, which presumably did not activate alcohol outcome expectancy representations in long-term memory. Moreover, the strength of relevant, content-specific expectancies (i.e., for tension reduction or aggression, respectively) moderated alcohol cue exposure effects, but the strength of other expectancies (e.g., for sociability or sexual arousal) did not. Together, these findings demonstrate that exposure to rudimentary alcohol cues independently engenders expectancy-consistent behavior, thereby attesting to the remarkable breadth and subtlety of the behavioral impact of alcohol expectancy activation.
实验研究和普遍看法表明,饮酒在其诸多影响中,既能减轻紧张情绪,又能助长攻击性。这些观察结果可能源于酒精对行为神经控制的直接药理作用,但也可以通过假设饮酒行为激活长期记忆中与放松或攻击相关的酒精预期的心理表征来解释。基于后一种观点,作者在两项实验中研究了基本的饮酒相关线索(据推测会激活编码的酒精预期)在完全没有实际饮酒或饮用安慰剂的情况下,是否会促进紧张情绪的缓解和敌意的产生。在实验1中,在情境中接触与酒精相关的词汇后,那些认为饮酒能减轻紧张情绪的预期更强的个体,在相对引发焦虑的情况下,表现出更愿意与异性陌生人见面,这表明他们对这次见面的担忧较少。类似地,在实验2中,在近乎阈下接触与酒精相关的词汇后,那些认为饮酒会助长攻击性的预期更强的个体,在经过实验设计的挑衅后,对目标人物表现出更大的敌意。接触与非酒精饮料相关的词汇后,均未出现上述后两种效应,因为这些词汇据推测不会激活长期记忆中的酒精结果预期表征。此外,相关的、特定内容的预期(即分别针对紧张情绪缓解或攻击性)的强度调节了酒精线索暴露效应,但其他预期(如社交性或性唤起)的强度则没有。总之,这些发现表明,接触基本的酒精线索会独立地引发与预期一致的行为,从而证明了酒精预期激活对行为影响的显著广度和微妙性。