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http://www.sciencedaily.com/releases/20 ... 141134.htm
New research findings from a study of 634 couples found that the more often they smoked marijuana, the less likely they were to engage in domestic violence.
The study, conducted by researchers in the University at Buffalo School of Public Health and Health Professions and Research Institute on Addictions (RIA), appeared in the online edition of Psychology of Addictive Behaviors in August.
The study attempted to clarify inconsistent findings about domestic violence among pot-smoking couples that primarily has been based on cross-sectional data (i.e., data from one point in time). Looking at couples over the first nine years of marriage, the study found:
• More frequent marijuana use by husbands and wives (two-to-three times per month or more often) predicted less frequent intimate partner violence (IPV) perpetration by husbands.
• Husbands' marijuana use also predicted less frequent IPV perpetration by wives.
• Couples in which both spouses used marijuana frequently reported the least frequent IPV perpetration.
• The relationship between marijuana use and reduced partner violence was most evident among women who did not have histories of prior antisocial behavior.
http://psycnet.apa.org/?&fa=main.doiLan ... 7/a0037302
Couples’ Marijuana Use Is Inversely Related to Their Intimate Partner Violence Over the First 9 Years of Marriage.
Smith, Philip H.; Homish, Gregory G.; Collins, R. Lorraine; Giovino, Gary A.; White, Helene R.; Leonard, Kenneth E.
Psychology of Addictive Behaviors, Aug 18 , 2014
Research on the association between marijuana use and intimate partner violence (IPV) has generated inconsistent findings, and has been primarily based on cross-sectional data. We examined whether husbands’ and wives’ marijuana use predicted both husbands’ and wives’ IPV perpetration over the first 9 years of marriage (Wave 1, n = 634 couples). We also examined moderation by antisocial behavior, the spouse’s marijuana use, and whether IPV was reported during the year before marriage. These predictive associations were calculated using a time-lagged multivariate generalized multilevel model, simultaneously estimating predictors of husband and wife IPV. In fully adjusted models, we found that more frequent marijuana use by husbands and wives predicted less frequent IPV perpetration by husbands. Husbands’ marijuana use also predicted less frequent IPV perpetration by wives. Moderation analyses demonstrated that couples in which both spouses used marijuana frequently reported the least frequent IPV perpetration. There was a significant positive association between wives’ marijuana use and wives’ IPV perpetration, but only among wives who had already reported IPV perpetration during the year before marriage. These findings suggest there may be an overall inverse association between marijuana use and IPV perpetration in newly married couples, although use may be associated with greater risk of perpetration among women with a history of IPV perpetration. (PsycINFO Database Record (c) 2014 APA, all rights reserved)