AbstractTwo studies examine the Concern for Appropriateness Scale (Lennox&Wolfe, 1984) as a likely moderator of dispositional and environmental variables associated with self‐reported use of alcohol and marijuana by college and precollege students In Study 1, data from 408 upper division students show that concern score interacts significantly with religiosity in analyses of use of both drugs, but not with any of 11 other dispositional variables nor with drug‐specific environment predictors in analyses of use of either drug In Study 2, data from 242 recent high school graduates show that concern score interacts significantly with religiosity and drug‐specific environment in the explanation of alcohol use but not in the explanation of marijuana use All of the significant interactions are in the predicted direction Results therefore suggest that the concern scale is valid for some of its intended pu