Age, period, and cohort size effects on self-reported alcohol, marijuana, and polydrug use: Results from the National Youth Survey☆

摘要: Abstract Age, period, and cohort size effects are calculated for alcohol, marijuana, polydrug use seven cohorts of youth, aged 11–17 in 1976 18–24 1983. Data taken from the National Youth Survey, a longitudinal prospective probability sample. Use size, rather than year birth, is based on existing theory (the Easterlin hypothesis) allows parameter estimation by ordinary least-squares regression. The results confirm existence nonlinear age effect with peak at about 20, finding consistent hypothesis maturational reform. also receives support, larger birth having higher rates substance most dependent variables. Period present appear to be 1980 marijuana use; they monotonically positive alcohol use. In several respects, these illicit differ those other types illegal behavior respect age, effects.