Among Hispanic adolescents, cultural factors such as acculturation, perceived discrimination, and acculturative stress are risk factors for drug use. Previous studies suggest that the effects of acculturation on drug use may be mediated by family functioning; when adolescents acculturate more rapidly than their parents, the parent- child acculturation discrepancy can lead to breakdowns in family communication and cohesion and increases in family conflict, which in turn can lead to risky behaviors such as drug use among the adolescents. Although there is considerable information about the role of family acculturation patterns in drug use among Hispanic adolescents, we do not know how family acculturation patterns affect adolescents as they transition into the next stage of life, emerging adulthood. Emerging adulthood, a provisional stage in which young adults try out adult roles but may not become firmly entrenched in them, is characterized by identity exploration, residential instability, self-focus, a subjective feeling of being between adolescence and true adulthood, and increased opportunities. In general, individuals who navigate this transition smoothly emerge with a more developed sense of identity, successful interpersonal relationships, new life roles, and minimal levels of substance use. However, the high level of independence and low level of social constraints that occur during emerging adulthood also make this a high-risk period for drug use and other problem behaviors. Understanding how factors in adolescence affect drug use in early adulthood can lead to better intervention efforts for adolescents. More research is needed to determine how cultural factors influence the transition to emerging adulthood among Hispanics and to identify the risk factors for escalation of drug use during this pivotal transition. This continuation application proposes to follow an established cohort of Hispanic adolescents (12th graders in the 2008-2009 school year) for an additional 4 years to identify the predictors of their drug use trajectories during the transition to emerging adulthood.
The Specific Aims of the proposed research are the following: (1) Conduct an additional 4 annual surveys of the participants; (2) Construct individual growth curves to describe their use of tobacco, alcohol, marijuana, and other drugs; (3) Identify the predictors of the growth curve parameters, including cultural factors, peer factors, substance use during high school, psychological factors, and demographic factors; (4) Evaluate emerging adulthood variables as potential mediators of these influences, including identity exploration, experimentation / possibilities, instability (residential mobility, role transitions), self-focus, and subjective experience of being in-between adolescence and adulthood; and (5) Make recommendations for the development of improved health education messages to prevent drug use among acculturating Hispanics during the transition to emerging adulthood.

Public Health Relevance

This application addresses the public health goals of preventing and reducing substance use among young adults. It also aims to reduce health disparities by identifying risk and protective factors that are specific to Hispanics.

National Institute of Health (NIH)
National Institute on Drug Abuse (NIDA)
Research Project (R01)
Project #
Application #
Study Section
Risk, Prevention and Intervention for Addictions Study Section (RPIA)
Program Officer
Etz, Kathleen
Project Start
Project End
Budget Start
Budget End
Support Year
Fiscal Year
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University of Southern California
Public Health & Prev Medicine
Schools of Medicine
Los Angeles
United States
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Grigsby, Timothy J; Forster, Myriam; Davis, Laurel et al. (2018) Substance Use Outcomes for Hispanic Emerging Adults Exposed to Incarceration of a Household Member during Childhood. J Ethn Subst Abuse :1-13
Milam, Joel; Slaughter, Rhona; Tobin, Jessica L et al. (2018) Childhood Cancer Survivorship and Substance Use Behaviors: A Matched Case-Control Study Among Hispanic Adolescents and Young Adults. J Adolesc Health 63:115-117
Escobedo, Patricia; Allem, Jon-Patrick; Baezconde-Garbanati, Lourdes et al. (2018) Cultural values associated with substance use among Hispanic emerging adults in Southern California. Addict Behav 77:267-271
Grest, Carolina Villamil; Lee, Jungeun Olivia; Gilreath, Tamika et al. (2018) Latent Class Analysis of Intimate Partner Violence Perpetration and Victimization among Latino Emerging Adults. J Youth Adolesc 47:575-585
Grest, Carolina Villamil; Amaro, Hortensia; Unger, Jennifer (2018) Longitudinal Predictors of Intimate Partner Violence Perpetration and Victimization in Latino Emerging Adults. J Youth Adolesc 47:560-574
Forster, Myriam; Grigsby, Timothy J; Soto, Daniel W et al. (2017) Perceived discrimination, cultural identity development, and intimate partner violence among a sample of Hispanic young adults. Cultur Divers Ethnic Minor Psychol 23:576-582
Grigsby, Timothy J; Forster, Myriam; Soto, Daniel W et al. (2017) Changes in the strength of peer influence and cultural factors on substance use initiation between late adolescence and emerging adulthood in a Hispanic sample. J Ethn Subst Abuse 16:137-154
Allem, Jon-Patrick; Sussman, Steve; Unger, Jennifer B (2017) The Revised Inventory of the Dimensions of Emerging Adulthood (IDEA-R) and Substance Use Among College Students. Eval Health Prof 40:401-408
Lorenzo-Blanco, Elma I; Unger, Jennifer B; Oshri, Assaf et al. (2016) Profiles of bullying victimization, discrimination, social support, and school safety: Links with Latino/a youth acculturation, gender, depressive symptoms, and cigarette use. Am J Orthopsychiatry 86:37-48
Unger, Jennifer B; Soto, Daniel W; Baezconde-Garbanati, Lourdes (2016) Trajectories of perceived discrimination from adolescence to emerging adulthood and substance use among Hispanic youth in Los Angeles. Addict Behav 53:108-12

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