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Theory Testing in Longitudinal Research on Marihuana
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academic addiction adolescent alcohol amphetamines antecedents associated attitudes attrition Baltes barbiturates Cahalan causal modeling chap characteristics clinical coefficients cohort construct validity correlation covariance criterion cross-lagged delinquency dependent variable Depressive mood developmental deviance deviant behavior diagnostic Drug Abuse drug behavior drug users drug-use early users effects example factor analysis Fogg follow-up friends grade hard liquor heroin high school study illicit drugs important included interview involvement Jessor Johnston Journal Kandel late users longitudinal study marihuana users measures Mellinger methodology methods multiple narcotics nonusers nonveterans onset overall panel parents and peers patterns peer influences perceived environment period personality population predictive predictors predisposition prior problem behavior problem scores prognostic psychological questionnaire rates regression relationships remission reported respondents Robins sample scale self-report social specific stages statistical strategy structure substantive theory Table theoretical tion values variance veterans Vietnam youth