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Multicenter Study
. 2009 Mar;38(3):440-53.
doi: 10.1007/s10964-008-9324-5. Epub 2008 Aug 19.

Juvenile offenders' alcohol and marijuana trajectories: risk and protective factor effects in the context of time in a supervised facility

Anne M Mauricio  1 , Michelle Little, Laurie Chassin, George P Knight, Alex R Piquero, Sandra H Losoya, Delfino Vargas-Chanes
Affiliations
Multicenter Study

Juvenile offenders' alcohol and marijuana trajectories: risk and protective factor effects in the context of time in a supervised facility

Anne M Mauricio et al. J Youth Adolesc. 2009 Mar.

Abstract

The current study modeled trajectories of substance use from ages 15 to 20 among 1,095 male serious juvenile offenders (M age = 16.54; 42% African-American, 34% Latino, 20% European-American, and 4% other ethnic/racial backgrounds) and prospectively predicted trajectories from risk and protective factors before and after controlling for time spent in a supervised setting. Results indicated that supervised time suppressed age-related growth in substance use. Trajectories of offenders with no supervised time and low levels of supervised time increased in substance use across age, whereas offenders with high levels of supervised time showed no growth. Almost all risk and protective factors had effects on initial substance use but only adolescent history of substance use, impulse control, and psychosocial maturity had an effect on change in substance use over time. Findings highlight the importance of formal sanctions and interventions superimposed on normal developmental processes in understanding trajectories of substance use among serious juvenile offenders.

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Figures

Fig. 1
Fig. 1
Substance use trajectories before and after controlling for PST and substance use trajectories by no, low, and high PST groups. Note: Values on Y axes equal frequency of alcohol or marijuana use. 0 = no use; 1 = 1 – 5x in the past 6 months; 2 = 1 – 3x per month
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