The goals of this prospective longitudinal study are to examine the etiologic determinants of changes in adolescent drug use and other problem behaviors and the consequences of drug use on the individual's functioning in a sample of Colombian youth. The proposed sample includes 1483 females and 1483 males, ages 12-17, and their parents. Based on four earlier studies, we anticipate obtaining at least 85 percent of 2966 adolescents and parents at follow-up. The study will attempt to accomplish the following: (1) To examine interrelations and interactions of personality, family, peers, ecological context, drug context, and cultural factors as they affect the course of drug use (i.e., onset, stability, change), delinquency, """"""""precocious"""""""" sexual behavior, and specific AIDS- related behaviors in a sample of Colombian youth; (2) To study the consequences of early drug use on Colombian adolescent and young adult intra- and interpersonal functioning; and (3) To identify the risk and protective factors that can affect Colombian adolescents engaging in drug use or other problem behaviors. Individual interviews with the adolescent subjects will be conducted by trained interviewers at two points in time. Data will also be collected from the mothers. Scales with adequate psychometric properties measuring the independent variables will be developed from the interview schedules. The primary analytic techniques will be LISREL, hierarchical, and logistic regression. The significance of this study lies in its longitudinal design with in- depth, intrapsychic, interpersonal, cultural, and problem behavior data available on Colombian adolescents. This is the first time such data will be available for Colombian youth, especially for so large a sample at particular risk for problem behaviors. Knowledge of the particular risk factors for problem behaviors (including drug use) in Colombian adolescents, knowledge of the protective factors which help offset the risks for drug use and other problem behaviors, and knowledge of the consequences of drug use for psychosocial functioning are important for determining the foci and timing of effective prevention and treatment programs. This data is particularly important in Colombian youth, because of the importance of the production and distribution of illegal drugs in Colombia and the influence and proximity of the drug picture on the development of Colombian adolescents. We will also be in a position to contrast drug use and risk and protective factors affecting drug use in Colombian and American adolescents with potential prevention and treatment benefits for both groups.

National Institute of Health (NIH)
National Institute on Drug Abuse (NIDA)
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Drug Abuse Epidemiology and Prevention Research Review Committee (DAPA)
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Mount Sinai School of Medicine
Public Health & Prev Medicine
Schools of Medicine
New York
United States
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Brook, Judith S; Brook, David W; Kats, Nataliya et al. (2009) Ecology and drug use: universal predictors across time and place. Psychol Rep 104:989-1006
Brook, Judith S; Brook, David W; Whiteman, Martin (2007) Growing up in a violent society: longitudinal predictors of violence in Colombian adolescents. Am J Community Psychol 40:82-95
Siqueira, Lorena M; Brook, Judith S (2003) Tobacco use as a predictor of illicit drug use and drug-related problems in Colombian youth. J Adolesc Health 32:50-7
Brook, David W; Brook, Judith S; Rosen, Zohn et al. (2003) Early risk factors for violence in Colombian adolescents. Am J Psychiatry 160:1470-8
Brook, Judith S; Brook, David W; Rosen, Zohn et al. (2003) Earlier marijuana use and later problem behavior in Colombian youths. J Am Acad Child Adolesc Psychiatry 42:485-92
Brook, David W; Brook, Judith S; Pahl, Tine et al. (2002) The longitudinal relationship between drug use and risky sexual behaviors among colombian adolescents. Arch Pediatr Adolesc Med 156:1101-7
Brook, David W; Brook, Judith S; Rosen, Zohn et al. (2002) Correlates of marijuana use in Colombian adolescents: a focus on the impact of the ecological/cultural domain. J Adolesc Health 31:286-98
Brook, J S; Brook, D W; Arencibia-Mireles, O et al. (2001) Risk factors for adolescent marijuana use across cultures and across time. J Genet Psychol 162:357-74
Brook, J S; Brook, D W; De La Rosa, M et al. (2001) Adolescent illegal drug use: the impact of personality, family, and environmental factors. J Behav Med 24:183-203
Brook, J S; Brook, D W; De La Rosa, M et al. (1999) The role of parents in protecting Colombian adolescents from delinquency and marijuana use. Arch Pediatr Adolesc Med 153:457-64

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