Social Categorization and the Influence of Drug Involvement on Drug Attitude Structures: Implications for Assessing Drug Use and Tolerance in the Workplace1

Theories of social categorization were used to generate hypotheses concerning the impact of drug involvement on the attitudes and knowledge structures that people use in making drug‐related judgments. Data indicated that greater drug exposure tended to foster more complex knowledge structures for drugs and drug users as revealed by subjects’ perceptions of drug users, tolerance for drug use, and perceptions of drug seriousness. Basically, high drug involvement in terms of personal alcohol use and associating with illicit drug users was related to greater individuation of drug user types. Therefore, high‐involved subjects, relative to low‐involved individuals, were better able to discriminate between different drug user subtypes and drug user subtypes were more important to high‐involved subjects when responding to drug‐related survey items.