Although research has found an association between social anxiety and alcohol use in noncollege samples, results have been mixed for college samples. College students face many novel social situations in which they may drink to reduce social anxiety. In the current study, the authors tested a model of college problem drinking, incorporating social anxiety and related psychosocial variables among 228 undergraduate volunteers. According to structural equation modeling (SEM) results, social anxiety was unrelated to alcohol use and was negatively related to drinking consequences. Perceived drinking norms mediated the social anxiety-alcohol use relation and was the variable most strongly associated with problem drinking. College students appear to be unique with respect to drinking and social anxiety. Although the notion of social anxiety alone as a risk factor for problem drinking was unsupported, additional research is necessary to determine whether there is a subset of socially anxious students who have high drinking norms and are in need of intervention.Keywords college students; problem drinking; drinking norms; social anxiety; expectancies Recently, college student problem drinking has received attention as an important public health concern (Wechsler, Lee, Kuo, & Lee, 2000). Not only is problem drinking highly prevalent among college students (e.g., O'Malley & Johnston, 2002;Wechsler et al., 2000), but it also negatively impacts non-problem-drinking college students (e.g., Hingston, Heeren, Zakocs, Kopstein, & Wechsler, 2002) and the community in general (e.g., Hingston et al., 2002). Social anxiety, a common psychiatric disorder (e.g., Kessler et al., 1994) that often co-occurs with alcohol problems (e.g., Kushner, Abrams, & Borchardt, 2000), has been proposed as a factor that motivates college students to drink (e.g., Burke & Stephens, 1999). This belief seems particularly relevant to college students who face a variety of novel social situations and settings that encourage alcohol consumption.Psychosocial factors have received considerable attention as important predictors of behavior; however, researchers have noted the absence of these factors in models of college student drinking (Burke & Stephens, 1999;Martin & Hoffman, 1993). A more comprehensive model of college student drinking may include factors such as social anxiety, alcohol expectancies, valuations (i.e., the desirability of the expected alcohol effects), perceived drinking norms of peers, and religious involvement (Forthun, Bell, Peek, & Sun, 1999;Fromme, Stroot, & Kaplan, 1993;Ham & Hope, 2003;O'Hare, 1990;Reis & Riley, 2000). tested a model that included these variables in a sample of students who were referred to the Alcohol Skills Training Program (ASTP; Fromme, Marlatt, Baer, & Kivlahan, 1994) because they violated the campus alcohol policy. Unexpectedly, social anxiety was unrelated or inversely related to the drinking variables (i.e., as assessed by typical weekly drinking and alcohol-related problems), and alcohol expectancies ...