Growth of men's alcohol use in early adulthood: intimate partners' influence.

The present study examined the effects of intimate partners' alcohol use on the developmental trajectories of men's alcohol use across their early to late 20s. Longitudinal data from a community sample of 110 at-risk young men and their intimate partners were analyzed using latent growth modeling. Results indicated that, in general, men showed a significant linear decrease in alcohol use across their 20s, as expected. However, partners' alcohol use had significant and positive effects on men's concurrent alcohol use across their 20s, regardless of relationship status, even after taking into account autoregressive effects of men's own alcohol use and their antisocial behavior. Furthermore, a new partner's alcohol use had a significantly greater influence on the man's alcohol use in his late 20s compared to a partner's alcohol use from intact relationships. Findings from the present study highlight the importance of considering intimate partners' alcohol use as part of the proximal psychosocial environment influencing men's alcohol use during early adulthood. Implications for prevention and intervention efforts are discussed.