Abstract

Although impulsivity has been implicated in cannabis and alcohol use, its role in alcohol and cannabis co-use behavior requires further study. We examined the moderating role of self-report and behavioral measures of impulsivity in the daily-level relationships between cannabis use and both (a) likelihood of same-day alcohol use and (b) the number of drinks consumed on the same day. Young adults (n = 153) completed a 90-day Timeline Follow Back assessing the amount of cannabis smoked (in grams), other forms of cannabis (e.g. oils, edibles), and the number of standard drinks consumed each day. Participants also completed a structured interview of Alcohol and Cannabis Use Disorders (AUD/CUD), and both self-report (UPPS impulsivity scales) and behavioral (behavioral disinhibition and delay discounting) measures of impulsivity. Zero-inflated multilevel modeling revealed that negative urgency, delay discounting, and disinhibition were significant, unique moderators of the daily relationship between cannabis and alcohol consumption, after controlling for AUD/CUD symptoms and other covariates. Specifically, individuals high (but not low) on negative urgency and delay discounting showed a positive association between grams of cannabis used on a given day and same-day number of standard drinks consumed. Contrary to expectations, individuals low on negative urgency and low in disinhibition showed a stronger relationship between grams of cannabis consumed and odds of engaging in any drinking on the same day. Results extend research on moderators of within-person, daily-level associations between cannabis and alcohol use, suggesting that several impulsivity-related constructs may contribute to complementary use of cannabis and alcohol among young adults.

摘要

尽管冲动与大麻和酒精使用有关，但其在酒精和大麻共同使用行为中的作用需要进一步研究。我们检查了自我报告和冲动行为测量在大麻使用与（a）当天饮酒的可能性和（b）当天饮用的饮料数量之间的日常关系中的调节作用。年轻人（n = 153) 完成了一项为期 90 天的时间线跟踪评估，以评估吸食大麻的数量（以克为单位）、其他形式的大麻（例如油类、食品）以及每天消耗的标准饮料数量。参与者还完成了对酒精和大麻使用障碍 (AUD/CUD) 的结构化访谈，以及对冲动性的自我报告（UPPS 冲动量表）和行为（行为去抑制和延迟折扣）测量。零膨胀多层次模型显示，在控制 AUD/CUD 症状和其他协变量后，负紧迫性、延迟折扣和去抑制是大麻和酒精消费之间日常关系的显着独特调节因子。具体来说，负紧迫性和延迟折扣高（但不低）的个人表明，在给定日期使用的大麻克数与当天消耗的标准饮料数量之间存在正相关关系。与预期相反，消极紧迫性和去抑制性低的个体表现出消费的大麻克数与在同一天从事任何饮酒的几率之间存在更强的关系。结果扩展了对大麻和酒精使用之间个人、日常关联的调节因素的研究，表明一些与冲动相关的结构可能有助于年轻人补充使用大麻和酒精。负紧迫性和去抑制性低的个体表明，消费的大麻克数与在同一天进行任何饮酒的几率之间存在更强的关系。结果扩展了对大麻和酒精使用之间个人、日常关联的调节因素的研究，表明一些与冲动相关的结构可能有助于年轻人补充使用大麻和酒精。负紧迫性和去抑制性低的个体表明，消费的大麻克数与在同一天进行任何饮酒的几率之间存在更强的关系。结果扩展了对大麻和酒精使用之间个人、日常关联的调节因素的研究，表明一些与冲动相关的结构可能有助于年轻人补充使用大麻和酒精。