Davis Alan K, Osborn Lawrence A, Leith Jaclyn, Rosenberg Harold, Ashrafioun Lisham, Hawley Anna, Bannon Erin E, Jesse Samantha, Kraus Shane, Kryszak Elizabeth, Cross Nicole, Carhart Victoria, Baik Kyoung-deok
Department of Psychology, Bowling Green State University.
Psychol Addict Behav. 2014 Jun;28(2):575-9. doi: 10.1037/a0036665.
To evaluate several psychometric properties of a questionnaire designed to assess college students' self-efficacy to employ 21 cognitive-behavioral strategies intended to reduce the amount and/or frequency with which they consume marijuana, we recruited 273 marijuana-using students to rate their confidence that they could employ each of the strategies. Examination of frequency counts for each item, principal components analysis, internal consistency reliability, and mean interitem correlation supported retaining all 21 items in a single scale. In support of criterion validity, marijuana use-reduction self-efficacy scores were significantly positively correlated with cross-situational confidence to abstain from marijuana, and significantly negatively correlated with quantity and frequency of marijuana use and marijuana-related problems. In addition, compared with respondents whose use of marijuana either increased or remained stable, self-efficacy was significantly higher among those who had decreased their use of marijuana over the past year. This relatively short and easily administered questionnaire could be used to identify college students who have low self-efficacy to employ specific marijuana reduction strategies and as an outcome measure to evaluate educational and skill-training interventions.
为评估一份问卷的几种心理测量特性，该问卷旨在评估大学生运用21种认知行为策略以减少大麻吸食量和/或吸食频率的自我效能感，我们招募了273名吸食大麻的学生，让他们对自己运用每种策略的信心进行评分。对每个项目的频数计数、主成分分析、内部一致性信度和平均项目间相关性的检验支持将所有21个项目保留在一个单一量表中。为支持效标效度，减少大麻使用的自我效能感得分与跨情境下戒除大麻的信心显著正相关，与大麻使用量、使用频率及与大麻相关的问题显著负相关。此外，与大麻使用量增加或保持稳定的受访者相比，在过去一年中减少了大麻使用量的受访者自我效能感显著更高。这份相对简短且易于实施的问卷可用于识别那些运用特定减少大麻策略的自我效能感较低的大学生，并作为评估教育和技能培训干预措施的一项结果指标。
