Convergences in prospective longitudinal surveys of drug use in normal populations / Denise B. Kandel – Theory testing in longitudinal research on marihuana use / Richard Jessor & Shirley L. Jessor – Antecedents of adolescent initiation into stages of drug use: a developmental analysis / Denise B. Kandel, Ronald C. Kessler, & Rebecca Z. Margulies – Psychological predictors of early use, late use, and nonuse of marihuana among teenage students / Gene M. Smith & Charles P. Fogg – Panel loss in a high school drug study / Eric Josephson & Matthew A. Rosen – Drugs and delinquency: a search for causal connections / Lloyd D. Johnston, Patrick M. O’Malley, & Leslie K. Eveland – Drug use, academic performance, and career indecision: longitudinal data in search of a model / Glen D. Mellinger, Robert H. Somers, Susan Bazell, & Dean I. Manheimer – The interaction of setting and predisposition in explaining novel behavior: drug initiations before, in, and afer Vietnam / Lee N. Robins – “Spontaneous remission” among untreated problem drinkers / Ron Roizen, Don Cahalan, & Patricia Shanks – Age, cohorts, and drug use / Matilda White Riley, & Joan Waring – Longitudinal studies of drug use in the high school: substantive and theoretical issues / John A. Clausen – Some episodes in the history of panel analysis / Paul F. Lazarsfeld – The interdependence of theory, methodology, and empirical data: causal modeling as an approach to construct validation / Peter M. Bentler.