Marijuana Use in Post-Collegiate Cohorts: Correlates of Use, Prevalence Patterns, and Factors Associated with Cessation

Questionnaire data from random samples of recent post-collegiate cohorts are examined with respect to several behavioral dimensions of marijuana use. The data indicate (1) that both incidence and prevalence are increasing, despite the aging of the cohorts; (2) that selected social correlates of initiation are poor predictors of the extent of use; and (3) that the significant status changes of marriage and entry into parenthood, and not aging per se, account for the frequently observed cessation of use occurring in the mid- to late-20's.