Adolescent Neural Responses to Antismoking Messages,Perceived Effectiveness,and Sharing Intention

ABSTRACT

Health communication delivered via media channels can substantially influence adolescents’ choices, and the effects of messages are amplified through interpersonal sharing. However, the underlying psychological and neurocognitive mechanisms that influence message effectiveness and likelihood of sharing are not well understood, especially among adolescents. Based on research in adults, we hypothesized and preregistered that message-induced neural activation in regions associated with self-reflection, social processing, and positive valuation would be related to greater perceived ad effectiveness and intentions to share messages. We focused on brain activity in meta-analytically defined regions associated with these three processes as 40 adolescent nonsmokers viewed advertisements from “The Real Cost” antismoking campaign. Perceived message effectiveness was positively associated with brain activity in the hypothesized social processing regions and marginally associated with brain activity in self-relevance regions, but not associated with brain activity in valuation regions. By contrast, intentions to share the messages were not associated with neural response in these 3 systems. In contrast to previous neuroimaging studies with adult subjects, our findings highlight the role of social cognition in adolescent processing of persuasive messages. We discuss the possibility that the mental processes responsive to effective and shareworthy messages may reflect developmental processes pertinent to media effects.     

Risk Factors for Adolescent Marijuana Use Across Cultures and Across Time

An integrated analysis of the data from 3 different studies was conducted to examine the early psychosocial predictors of later marijuana use among adolescents. Longitudinal analysis of interview data was performed. The data used in the analysis were derived from (a) a sample of 739 predominantly White adolescents representative of the northeastern United States, (b) a sample of 1,190 minority adolescents from the East Harlem section of New York City, and (c) a sample of 1,374 Colombian adolescents from two cities in Colombia. South America. In 2 of the samples, participants were interviewed in their homes, and in the 3rd study, participants were assessed in school. The predictors included a number of variables from (a) the personality domain, reflecting the adolescents' conventionality and intrapsychic functioning; (b) the family domain, representing the parent-child mutual attachment relationship and parental substance use; (c) the peer domain, reflecting the peer group's delinquency and substance use; and (d) the adolescents' own use of legal drugs. The dependent variable was adolescent marijuana use. The results of the analysis demonstrated remarkable consistency in the risk and protective factors for later marijuana use across the 3 samples, attesting to the robust nature of these predictors and their generalizability across gender, time, location, and ethnic/cultural background. These findings have important implications for designing intervention programs. Programs aimed at preventing adolescent marijuana use can be designed to incorporate universal features and still incorporate specific components that address the unique needs of adolescents from different groups.     

Reply by Edward S. Casey

Stigma and discrimination against mental illness represent chronic social stressors that can inflame psychiatric symptoms and limit functional adjustment. The implication is that the prevalence and severity of mental illness is determined, at least to a certain extent, by aversive socio-cultural factors. In a hostile social environment, these factors may seriously limit the effectiveness of professional interventions; whereas, removing social barriers to functioning often results in a favorable clinical outcome. For example, studies show that inclusive settings with supportive employment decrease psychiatric symptoms and the use of mental health services. By extrapolation, these results point to the possibility that a society-wide reduction in the prevalence and severity of mental illness may come from benevolent changes in the social climate, not just from innovative treatments. Public health policies rarely take this possibility into consideration in resource allocation decisions.     

Teachers’ Experience, Attitudes, Feelings and Behavioural Intentions towards Children with Special Educational Needs

This project examined teachers’ attitudes to children with special educational needs. Understanding the implicit and explicit attitudes of teachers is an important precursor to improving teaching practices for children with special needs. Participants (N=77) were pre-service teachers and experienced teachers during in-service training courses. Results showed that behavioural intentions related to explicit rather than implicit attitudes, and that feelings of guilt and anxiety were associated with intentions for negative actions. Profiles of attitudes were substantially similar in terms of personal and teaching experiences. However, attitudes were less positive about children with low social skills and more positive about children with low cognitive skills. Findings have direct application to training teachers of children with special educational needs.     

Developmental trajectories of marijuana use from adolescence to adulthood: personality and social role outcomes

Longitudinal trajectories of marijuana use from adolescence into adulthood were examined for adverse life-course outcomes among African-Americans and Puerto Ricans. Data for marijuana use were analyzed at four points in time and on participants' personality attributes, work functioning, and partner relations in adulthood using growth mixture modeling. Each of the three marijuana-use trajectory groups (maturing-out, late-onset, and chronic marijuana-users) had greater adverse life-course outcomes than a nonuse or low-use trajectory group. The chronic marijuana-use trajectory group was highly associated with criminal behavior and partners' marijuana use in adulthood. Treatment programs for marijuana use should also directly address common adverse life-course outcomes users may already be experiencing.     

Evaluation of a cognitive‐behavioral intervention for high‐ and medium‐risk probationers

Reducing recidivism is a central goal of treatment programs for offenders. Preliminary evidence suggests that cognitive‐behavioral group interventions based on the National Institute of Corrections curriculum (Bush, Glick, & Taymans, 1997) may be effective in reducing recidivism rates among adult probationers. We evaluated the effectiveness of a program based on this curriculum among 167 high‐ and medium‐risk probationers assigned to this program and a comparison group of 120 high‐ and medium‐risk probationers matched on age and number of prior criminal charges. Improvements over prior studies included use of survival analytic methods and propensity score matching, a longer follow‐up interval, and examination of treatment effectiveness within ethnic groups. Relative to the comparison group, treatment group probationers were more likely to complete probation satisfactorily and survive longer before rearrest. Moreover, supplementary analyses suggested that ethnicity was associated with differences in intervention effectiveness. Treatment was predictive of lower recidivism rates among European Americans and African Americans but was less effective among Latino American probationers.