Jacqueline Sims

Sexual partner accumulation from adolescence through early adulthood: the role of family, peer, and school social norms

PURPOSE An early age of sexual initiation and sexual activity with multiple partners are risk factors for an array of detrimental outcomes. Drawing on social norms theory, this study assessed the role of subjective and descriptive social norms from parents, peers, and schoolmates on trajectories of sexual partner accumulation from early adolescence through early adulthood. METHODS Data were drawn from the in-home survey sample of Add Health, following 14,797 youth from adolescence through early adulthood. Social norms data were drawn from youth, parent, schoolmate, and school administrator reports. Multi-level growth models assess how parent, peer, and school social norms predicted initial levels and growth in sexual partner accumulation. RESULTS Parent and peer approval of youth sexual behavior, as well as lower perceived negative repercussions of pregnancy, predicted greater initial levels and greater growth over time in the accumulation of sexual partners. Similarly, youth attending schools with a greater proportion of sexually experienced schoolmates reported higher initial levels of sexual partners. In contrast, greater parental warnings regarding negative consequences of sex predicted heightened sexual partner accumulation. Some moderation by youth gender and age emerged as well. CONCLUSIONS Results highlight the role of both subjective and descriptive social norms, suggesting the importance of understanding and seeking to influence the social beliefs and expectations of youth and their families.

Gender, male-typicality, and social norms predicting adolescent alcohol intoxication and marijuana use

OBJECTIVE This study examined the direct and interactive effects of gender, male-typicality, and social norms in predicting the initiation and longitudinal patterns of alcohol intoxication and marijuana use in U.S. youth. METHOD Data were drawn from a longitudinal survey of 10,588 youth who participated in the in-home survey of the National Longitudinal Study of Adolescent Health (Add Health). Multilevel growth modeling used data from three time points to assess trajectories of substance use from adolescence to young adulthood. RESULTS Analyses indicated that gender, male-typicality, as well as home availability, friend social norms, and schoolmate social norms predicted initial levels of intoxication and marijuana use, with gender, friend norms, and schoolmate norms also predicting differential rates of growth over time in intoxication and marijuana use. Interaction results indicated that gender moderated male-typicalitys relationship to both substance use variables, and home availabilitys relationship to alcohol intoxication. CONCLUSIONS These findings extend the literatures regarding interrelations among gender, gender roles, social norms, and health risk behaviors by (a) locating the genesis of those effects in adolescence, (b) identifying gender and social norms to be salient in terms of both initiation and growth of substance use over time, (c) suggesting that gender differences should be understood as moderated by other social-contextual variables, and (d) arguing that prevention efforts should address gender and gender roles more explicitly in programming.

Direct and interactive effects of parent, friend, and schoolmate drinking on alcohol use trajectories

Objective: This study considered the unique and interactive roles of social norms from parents, friends and schools in predicting developmental trajectories of adolescent drinking and intoxication. Design and outcome measures: Using data from the National Longitudinal Study of Adolescent Health, which followed adolescents (N = 18,921) for 13 years, we used discrete mixture modelling to identify unique developmental trajectories of drinking and of intoxication. Next, multilevel multinomial regression models examined the role of alcohol-related social norms from parents, friends and schoolmates in the prediction of youths’ trajectory group membership. Results: Results demonstrated that social norms from parents, friends and schoolmates that were favourable towards alcohol use uniquely predicted drinking and intoxication trajectory group membership. Interactions between social norms revealed that schoolmate drinking played an important moderating role, frequently augmenting social norms from parents and friends. The current findings suggest that social norms from multiple sources (parents, friends and schools) work both independently and interactively to predict longitudinal trajectories of adolescent alcohol use. Conclusions: Results highlight the need to identify and understand social messages from multiple developmental contexts in efforts to reduce adolescent alcohol consumption and alcohol-related risk-taking.

Environmental risks outweigh dopaminergic genetic risks for alcohol use and abuse from adolescence through early adulthood

BACKGROUND Alcohol use is a primary public health concern, particularly among adolescents and young adults. Based on the rapidly growing field of gene-environment models, this study assessed the combined role of environmental and dopamine-related genetic correlates of early alcohol use and abuse. METHODS Multilevel growth models assessed trajectories of alcohol use and intoxication and ordered logistic regressions assessed alcohol use disorder among a sample of 12,437 youth from the nationally representative Add Health study who were followed from mid-adolescence through early adulthood. RESULTS Endogenous and exogenous stressful life events and social norms supportive of alcohol use from parents and peers were significant predictors of alcohol use, intoxication, and alcohol use disorder, with consistent patterns across males and females. In contrast, a dopamine-system genetic risk score (GRS) was not associated with alcohol use trajectories nor alcohol use disorder in early adulthood, although weak connections emerged between the GRS and growth trajectories of intoxication, indicating that higher GRS predicted more frequent episodes of intoxication during the transition to adulthood but not during adolescence or later 20s. No evidence of gene-environment interactions emerged. CONCLUSIONS Results extend a substantial body of prior research primarily assessing single genetic polymorphisms in the dopamine system, suggesting that dopaminergic GRSs may be associated with more problematic alcohol behaviors at some developmental periods, but further, that social norms and stressful life experiences are more consistent correlates of early and problematic alcohol use among youth. These environmental factors present potential targets for research manipulating contexts to identify causal pathways.

Independent Contributions of Mothers’ and Fathers’ Language and Literacy Practices: Associations With Children’s Kindergarten Skills Across Linguistically Diverse Households

ABSTRACT Research Findings: Home language and literacy inputs have been consistently linked with enhanced language and literacy skills among children. Most studies have focused on maternal inputs among monolingual populations. Though the proportion of American children growing up in primarily non-English-speaking homes is growing and the role of fathers in early development is increasingly emphasized, less is known about these associations in primarily non-English-speaking households or how mothers and fathers independently contribute to children’s skills. Using a subsample of data from the Early Childhood Longitudinal Study–Birth Cohort (N = 5,450), this study assessed the frequency of maternal and paternal inputs during early childhood and their prospective connections with children’s English language and literacy skills at age 5 across White, Mexican, and Chinese children from linguistically diverse households. Analyses revealed significant differences in inputs by ethnic/language group membership and significant associations between both maternal and paternal inputs and children’s skills. These associations did not differ across ethnic/language group membership. Practice or Policy: These results point to the importance of promoting rich home language and literacy environments across diverse households regardless of the language in which they take place or the parent from which they derive.