Understanding why young adults consume alcohol the way they do can lead to
more effective educational programming for promotion of students' personal
health and safety. The authors examined the predictive role of expectations
about alcohol, perceived peer norms of consumption, awareness of rules, an
d individual self-efficacy in conjunction with demographic variables for ma
le and female college students' weekly alcohol consumption. The sample of 4
,960 students analyzed here is 10 to 20 times larger and more nationally re
presentative than the samples used in similar studies. The authors used a g
eneral linear model; 41% of the men's variance and 33% of the women's varia
nce in self-reported weekly alcohol consumption were explained by the set o
f predictors. In descending order of variance accounted for in male and fem
ale students' self-reported weekly alcohol consumption, perceived gender-sp
ecific norms of consumption, expectations about the effects of alcohol, and
the importance of drinking in high school were significant predictors for
both men and women. The salience of psychological variables for young adult
s' consumption of alcohol underscores the importance of recognizing individ
ual predictors of behavior in the broader ecological context in which those
behaviors are performed.