Is Talk "Cheap"? An Initial Investigation of the Equivalence of Alcohol Purchase Task Performance for Hypothetical and Actual Rewards
Is Talk "Cheap"? An Initial Investigation of the Equivalence of Alcohol Purchase Task Performance for Hypothetical and Actual Rewards
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DOI：
10.1111/j.1530-0277.2011.01656.x
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发表时间：
2012-04-01
影响因子：
3.2
通讯作者：
MacKillop, James
中科院分区：
文献类型：
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作者：
Amlung, Michael T.;Acker, John;MacKillop, James
背景：行为经济酒精购买任务(APT)是对酒精需求的自我报告测量，评估不断上涨的价格水平下的估计消费。然而，假设结果的估计绩效与实际结果的选择之间的关系尚未确定。这项研究既考察了对假设结果和实际结果的选择之间的对应关系，也考察了估计的饮酒量和实际饮酒行为之间的对应关系。这项研究的附带目标是检验酒精暗示对APT表现的影响。方法：41名大量饮酒的成年人(56%的男性)参加了一项人类实验室方案，包括假想和实际酒精和金钱的APT，酒精线索反应范式，酒精自我给药期和恢复期。结果：皮尔逊相关性揭示了假想和实际饮酒的APT表现之间非常高的一致性(PS<；0.001)。在自我管理期间，行动方案的估计消耗量与实际消耗量之间也有很强的相关性(r=0.87p<；0.001)。尽管存在显著的天花板效应，但接触酒精会显著增加主观渴望和性唤醒，并对需求强度产生趋势水平的影响。结论：这些结果表明，假设酒精和实际酒精的价值偏好之间以及估计消费量和实际消费量之间可能存在密切的对应关系。讨论了未来研究的方法论考虑和优先事项。
Background: Behavioral economic alcohol purchase tasks (APTs) are self-report measures of alcohol demand that assess estimated consumption at escalating levels of price. However, the relationship between estimated performance for hypothetical outcomes and choices for actual outcomes has not been determined. The present study examined both the correspondence between choices for hypothetical and actual outcomes, and the correspondence between estimated alcohol consumption and actual drinking behavior. A collateral goal of the study was to examine the effects of alcohol cues on APT performance.Methods: Forty-one heavy-drinking adults (56% men) participated in a human laboratory protocol comprising APTs for hypothetical and actual alcohol and money, an alcohol cue reactivity paradigm, an alcohol self-administration period, and a recovery period.Results: Pearson correlations revealed very high correspondence between APT performance for hypothetical and actual alcohol (ps < 0.001). Estimated consumption on the APT was similarly strongly associated with actual consumption during the self-administration period (r = 0.87, p < 0.001). Exposure to alcohol cues significantly increased subjective craving and arousal and had a trend-level effect on intensity of demand, in spite of notable ceiling effects. Associations among motivational indices were highly variable, suggesting multidimensionality.Conclusions: These results suggest there may be close correspondence both between value preferences for hypothetical alcohol and actual alcohol, and between estimated consumption and actual consumption. Methodological considerations and priorities for future studies are discussed.