a Department of Psychology , University at Albany, State University of New York, Albany, NY, USA.
J Psychoactive Drugs. 2018 Nov-Dec;50(5):411-419. doi: 10.1080/02791072.2018.1511877. Epub 2018 Sep 5.
Impulsivity and substance use covary. Smith and Anderson's acquired preparedness model proposes that impulsivity predicts substance use through a mediational model such that substance use expectancies mediate the relation between impulsivity and drug use. The present study seeks to examine the relation between positive urgency, an important component of impulsivity with specific relations to substance use behavior, marijuana expectancies, and marijuana use patterns. The study focused on a sample of frequent marijuana users (n = 3,616) and assessed positive urgency using the UPPS-P, expectancies using the Biphasic Marijuana Effects Scale, an adapted form of the Biphasic Alcohol Effects Scale to measure the sedative and stimulant properties of marijuana, and also assessed use patterns. Findings suggest that stimulant expectancies predict heavier, more frequent marijuana use than sedative expectancies and that marijuana expectancies vary based on the limb of marijuana intoxication. Examination of the acquired preparedness model revealed that positive urgency's link to marijuana use was fully mediated by expectancies.
冲动性和物质使用是相关的。Smith 和 Anderson 的获得性准备模型提出，冲动性通过中介模型预测物质使用，即物质使用预期在冲动性和药物使用之间起中介作用。本研究旨在检验积极冲动（冲动性的一个重要组成部分，与物质使用行为有特定关系）、大麻预期和大麻使用模式之间的关系。该研究关注的是一组经常使用大麻的人群（n=3616），并使用 UPPS-P 评估积极冲动，使用双相大麻效应量表（Biphasic Marijuana Effects Scale）评估预期，该量表是双相酒精效应量表的一种改编形式，用于测量大麻的镇静和兴奋特性，同时还评估使用模式。研究结果表明，兴奋预期比镇静预期更能预测大麻使用量更大、更频繁，并且大麻预期因大麻中毒的肢体而异。对获得性准备模型的检验表明，积极冲动与大麻使用的联系完全由预期来介导。
