Theoretical models of alcohol consumption assert that young adults endorse multiple drinking motives, including drinking to cope with negative experiences and to enhance positive experiences. Social contacts may be important to both pathways. This study applied daily process methodology to determine the relationship between college student drinking in different contexts and daily social contacts and moods. Each afternoon for 3 weeks, 122 undergraduates (43% men, 57% women) logged onto a secure Web site during specified hours to report daily activities, moods, and contacts. Hierarchical linear modeling analyses provided support for motivational models and the context-specific nature of motivated drinking. Individual differences were revealed for each motivation. These findings highlight the importance of studying within-person processes using daily process designs.

Researchers have devoted much attention to the influence of social support on positive health outcomes, including efficacy of alcoholism treatment. Yet relatively little research has examined the structure (e.g., quantity or frequency of interactions) and quality (e.g., subjective appraisals of value or adequacy) of alcoholics' relationships. In addition, few studies have explored adult alcoholics' friendships, despite research suggesting that friendships influence treatment outcomes. The current study examined friendship characteristics of Project MATCH participants. Participants (1,183 men, 380 women) described the structure and quality of their friendships at baseline and posttreatment. Friendships with drinkers and nondrinkers were examined in relation to baseline and follow-up drinking levels, as well as participant gender, age and parental history of alcohol problems. Significant changes were found in all aspects of friendships with both drinkers and nondrinkers from baseline to the 6-month posttreatment interview. For example, although approximately half of alcoholics friendships were with drinkers at baseline, that proportion decreased following treatment, whereas the proportion of friendships with nondrinkers increased. There was support for the hypothesis that changes in both friendship quality and structure would predict follow-up drinking levels. This study offers persuasive evidence for the importance of quality and, especially, structure of friendships to adult alcoholics' drinking behavior. Results also suggest differences in friendships depending on gender and across the lifespan. Such individual differences may have implications for prevention and treatment.

Loneliness is a well-known indicator of relationship deficits, with potentially severe consequences on health and well-being (Perlman & Peplau, 1981). Research has used cross-sectional methods to examine behavioral consequences of loneliness (e.g., Cacioppo et al., 2002). However, within-person associations between daily fluctuations in loneliness and subsequent behavioral outcomes have yet to be explored. Using a sample of community-dwelling adults, the authors examined associations between daily loneliness on daily time with others, and subsequent context-specific alcohol consumption (i.e., social and solitary consumption), and individual differences in these patterns of behavior. Daytime loneliness significantly and uniquely predicted patterns of social behavior and context-specific consumption; time with others mediated loneliness–social consumption associations, but not loneliness–solitary consumption relationships. These findings contribute to existing literature by demonstrating the unique properties of solitary versus social consumption as behavioral responses to loneliness, thus addressing inconsistent findings regarding the effects of loneliness on alcohol consumption.

Motivational models of alcohol consumption have articulated the manner in which positive and negative experiences motivate drinking in unique social contexts (e.g., M. L. Cooper, M. R. Frone, M. Russell & P. Mudar, 1995, Drinking to regulate positive and negative emotions: A motivational model of alcohol use, Journal of Personality and Social Psychology, Vol. 69, pp. 990-1005). Daily process methodology, in which daily events, moods, and drinking behaviors are reported daily or multiple times per day, has been used to examine behavioral patterns that are consistent with discrete motivations. We advance the notion that repeated patterns of drinking in various social contexts as a function of positive or negative mood increases can provide evidence of individual-level if-then drinking signatures, which in turn can predict drinking-related outcomes. The purpose of this study was to examine the utility of slopes to predict longer term drinking motivations and alcohol problems by employing a daily-process study of nonclinical moderate alcohol drinkers (N = 47; 49% women). Participants responded to thrice daily interviews administered via handheld computer for 30 days, followed by a longitudinal telephone survey for 12 months. Participants' daily mood-drinking relationships were extracted from hierarchical linear modeling and employed as predictors of 12-month outcomes in multiple regression analyses. Daily mood-drinking patterns demonstrated significant variability across persons, such that moderate drinkers could be reliably differentiated based on those patterns in terms of distinct drinking-related outcomes. Among the results, negative-mood-solitary-drinking slopes were associated with lower subsequent coping motives but positive-mood-solitary-drinking slopes were predictive of higher coping and lower social motives. Conversely, positive-mood-social-drinking associations were predictive of higher enhancement motives and brief Michigan Alcoholism Screening Test scores. Results are interpreted in light of motivational models of consumption.