Hayaki Jumi, Anderson Bradley J, Stein Michael D
Department of Psychology, College of the Holy Cross, 1 College Street, Worcester, MA 01610, USA.
Drug Alcohol Depend. 2008 Apr 1;94(1-3):109-15. doi: 10.1016/j.drugalcdep.2007.10.013. Epub 2007 Dec 19.
Previous research has shown that one's expectations about the effects of using a particular substance (i.e., substance use expectancies) are associated with the quantity and frequency of actual use. An extensive literature supports the importance of expectancies in predicting alcohol use, but less is known about the association between expectancies and use of other substances. The purpose of the present investigation was to examine the association between cocaine expectancies and frequency of use in a heterogeneous community sample of drug users. Participants were 157 self-identified primary cocaine users recruited from the community as part of a hepatitis prevention study. Participants completed a structured interview that assessed demographic variables, current and past drug use, and drug expectancies. Results from multivariate logistic regression analyses indicated that frequency of cocaine use was positively associated with higher expectation that drug use would increase social and physical pleasure (OR=1.67, p<0.05) and inversely associated with higher expectation that drug use would increase cognitive and physical impairment (OR=0.59, p<0.01). These findings suggest that drug use expectancies are an important correlate of cocaine use behavior in nontreatment-seeking community users.
先前的研究表明，一个人对使用某种特定物质的效果的期望（即物质使用预期）与实际使用的数量和频率相关。大量文献支持预期在预测酒精使用方面的重要性，但对于预期与其他物质使用之间的关联了解较少。本研究的目的是在一个异质性的社区吸毒者样本中，检验可卡因预期与使用频率之间的关联。参与者是从社区招募的157名自我认定的主要可卡因使用者，作为一项肝炎预防研究的一部分。参与者完成了一项结构化访谈，该访谈评估了人口统计学变量、当前和过去的药物使用情况以及药物预期。多变量逻辑回归分析的结果表明，可卡因使用频率与更高的药物使用会增加社交和身体愉悦感的期望呈正相关（比值比=1.67，p<0.05），与更高的药物使用会增加认知和身体损害的期望呈负相关（比值比=0.59，p<0.01）。这些发现表明，在未寻求治疗的社区使用者中，药物使用预期是可卡因使用行为的一个重要相关因素。
