Metrik Jane, Farris Samantha G, Aston Elizabeth R, Kahler Christopher W
Center for Alcohol and Addiction Studies, Brown University School of Public Health, Providence, RI, 02903, USA; Providence Veterans Affairs Medical Center, Providence, RI, 02908, USA; The Warren Alpert Medical School of Brown University, Department of Psychiatry and Human Behavior, Providence, RI 02906, USA.
The Warren Alpert Medical School of Brown University, Department of Psychiatry and Human Behavior, Providence, RI 02906, USA; The Miriam Hospital, Centers for Behavioral and Preventative Medicine, Providence, RI, 02906, USA; Butler Hospital, Providence, RI, 02906, USA.
Drug Alcohol Depend. 2017 Aug 1;177:163-170. doi: 10.1016/j.drugalcdep.2017.04.005. Epub 2017 Jun 1.
The present research examines anticipated consequences of ceasing or reducing marijuana use with initial development and psychometric validation of a measure of marijuana cessation expectancies.
The 46-item Marijuana Cessation Expectancies Questionnaire (MCEQ) was initially developed from the content validity analysis of free responses about expected outcomes of stopping and decreasing marijuana use generated by 94 participants. The closed-ended MCEQ was subsequently administered to 151 non-treatment seeking regular marijuana users (used on M=64.7% of the prior 60days, SD=25.1%;M=21.4, SD=3.96; 38.4% female).
Exploratory factor analyses identified six MCEQ factors that accounted for 61% of variance, which were related to expected improvement in: 1) performance/motivation, 2) problems with authority, and 3) interpersonal functioning, and expected worsening of 4) mood states and 5) fun experiences, and 6) changes in appetite/weight from cessation/reduction of marijuana use. Internal consistency of full scale items was good (α=0.86) and moderate to high for all factors (α's=0.60-0.89). The MCEQ items showed good concurrent validity with key measures and incremental associations with change indices (prior history of cessation/reduction attempt, benefits of reduction, importance of change), beyond the effects of marijuana use expectancies.
These data provide initial support for the MCEQ and suggest it is closely linked to reduction/cessation decisions in marijuana users. MCEQ may be used clinically to enhance existing behavioral treatments and motivational interventions for problem marijuana use.
本研究通过初步编制一份大麻戒断预期量表并对其进行心理测量学验证，来考察停止或减少大麻使用的预期后果。
46项大麻戒断预期问卷（MCEQ）最初是根据对94名参与者关于停止和减少大麻使用的预期结果的自由回答进行内容效度分析而编制的。随后，对151名寻求非治疗的常规大麻使用者发放了封闭式MCEQ（在过去60天中使用大麻的天数M = 64.7%，标准差SD = 25.1%；年龄M = 21.4岁，标准差SD = 3.96；女性占38.4%）。
探索性因素分析确定了MCEQ的六个因素，这些因素解释了61%的方差，它们与预期改善相关的方面包括：1）表现/动机，2）与权威的问题，3）人际功能，以及预期恶化的方面包括：4）情绪状态，5）有趣体验，6）因停止/减少大麻使用导致的食欲/体重变化。全量表项目的内部一致性良好（α = 0.86），所有因素的内部一致性从中度到高度（α值 = 0.60 - 0.89）。MCEQ项目与关键测量指标具有良好的同时效度，并且在超出大麻使用预期影响的情况下，与变化指标（既往停止/减少尝试史、减少的益处、改变的重要性）具有增量关联。
这些数据为MCEQ提供了初步支持，并表明它与大麻使用者的减少/戒断决定密切相关。MCEQ可在临床上用于加强现有的针对问题性大麻使用的行为治疗和动机干预。
