Changing Friend Selection in Middle School: A Social Network Analysis of a Randomized Intervention Study Designed to Prevent Adolescent Problem Behavior

Path of Physical Exercise's Impact on Deviant Behavior Among Chinese Adolescents

Purpose

Physical exercise is an important predictor of deviant behavior in adolescents; however, the paths and mechanisms underlying this relationship remain understudied.

Patients and Methods

This cross-sectional study used education tracking data of 8725 Chinese adolescents (4453 males, 4240 females, average age 14 ± 0.73) to construct a chain mediation model to explore whether sleep quality and mental health mediated the relationship between physical exercise and adolescent deviant behavior.

Results

The results show that physical exercise cannot directly predict adolescent deviant behavior; however, it can indirectly affect deviant behavior through the mediating effect of sleep quality and mental health as well as the chain mediating benefit of "sleep quality-mental health".

Conclusion

Sleep quality and mental health are important internal factors of physical exercise that inhibit deviant adolescent behavior. The lack of physical activity and poor sleep quality should be prioritized in interventions regarding deviant behavior among Chinese adolescents.

The effect of marijuana use in adolescence on college and graduate degree attainment

We estimate the long-term effect of using marijuana in adolescence on college and graduate degree attainment measured approximately 20 years later. We rely on the first two waves (1994-1996) and the fifth wave (2016-2018) of the National Longitudinal Study of Adolescent to Adult Health and estimate instrumental variables models that exploit the network structure at the second degree by using marijuana use status of friends of friends who are not themselves friends of the respondent in order to instrument for the respondent's marijuana use. Our models also include school and grade fixed effects. Marijuana use in adolescence leads to a large reduction in the likelihood of college and graduate degree attainment by the time respondents are aged 33-43 years old.

Longitudinal association between interparental conflict and risk-taking behavior among Chinese adolescents: testing a moderated mediation model

BACKGROUND

The interparental conflict has been associated with an increased adolescents' engagement in risk-taking behaviors. However, few studies have examined the potential mediation of deviant peer affiliation and the potential moderation of school climate. Grounded in the ecological system theory, this study aimed to explore the mediating role of deviant peer affiliation and the moderating role of school climate between the association of interparental conflict and risk-taking behavior.

METHODS

This study conducted a longitudinal design (3 time points, 3 months apart) with the sample comprising 550 middle school students in southeastern China (52.91% males; mean age at Time 1 = 15.37). The performed measurements encompassed interparental conflict (T1), deviant peer affiliation (T2), school climate (T3), risk-taking behavior (T1/T2/T3), and demographic information.

RESULTS

The moderated mediation model revealed that after controlling for T1/T2 risk-taking behavior, T1 interparental conflict was longitudinally and positively correlated with T3 risk-taking behavior through T2 deviant peer affiliation. Furthermore, moderated mediation analysis demonstrated that a positive school climate ameliorated the adverse impact of deviant peer affiliation on risk-taking behavior, thereby mitigating the indirect effect of interparental conflict on risk-taking behavior among adolescents.

CONCLUSIONS

Our findings propose a nuanced explanation of the processing mechanisms between interparental conflict and risk-taking behaviors among Chinese adolescents. The theoretical and practical implications of the findings are discussed.

Social contagion of academic behavior: Comparing social networks of close friends and admired peers

Peer relations become significant socializing agents for diverse behaviors during adolescence. This study investigated relationship selection and social influence of early adolescents’ close friends and admired peers with regard to academic behavioral engagement. A stochastic actor-based model of social network analysis was used to examine classroom social networks across 2 waves (M_age = 11.46; N = 542) based on peer nominations. Adolescents were asked to nominate their “close friends they hang around with and talk to the most” and peers that they “admire, respect, and want to be like” Results indicated that adolescents who were similar in academic engagement more often became friends. Also, close friends’ and admired peers’ academic engagement contributed to adolescents’ own academic engagement over time. The results suggest that both close friends and admired peers are important channels for social contagion of academic behavior and that examining social relations beyond friends are important for advancing our understanding of peer social influence during adolescence.

Social Network Research contribution to evaluating process in a feasibility study of a peer-led and school-based sexual health intervention

There is growing interest in social network-based programmes to improve health, but rigorous methods using Social Network research to evaluate the process of these interventions is less well developed. Using data from the "STis And Sexual Health" (STASH) feasibility trial of a school-based, peer-led intervention on sexual health prevention, we illustrate how network data analysis results can address key components of process evaluations for complex interventions-implementation, mechanisms of impacts, and context. STASH trained students as Peer Supporters (PS) to diffuse sexual health messages though face-to-face interactions and online Facebook (FB) groups. We applied a Multilevel Exponential Random Graph modelling approach to analyse the interdependence between offline friendship relationships and online FB ties and how these different relationships align. Our results suggest that the creation of online FB communities mirrored offline adolescent groups, demonstrating fidelity of intervention delivery. Data on informal friendship networks related to student's individual characteristics (i.e., demographics, sexual health knowledge and adherence to norms, which were included for STASH), contributed to an understanding of the social relational 'building' mechanisms that sustain tie-formation. This knowledge could assist the selection of opinion leaders, improving identification of influential peers situated in optimal network positions. This work provides a novel contribution to understanding how to integrate network research with the process evaluation of a network intervention.

How academic achievement spreads: The role of distinct social networks in academic performance diffusion

Behavior diffusion through social networks is a key social process. It may be guided by various factors such as network topology, type of propagated behavior, and the strength of network connections. In this paper, we claim that the type of social interactions is also an important ingredient of behavioral diffusion. We examine the spread of academic achievements of first-year undergraduate students through friendship and study assistance networks, applying stochastic actor-oriented modeling. We show that informal social connections transmit performance while instrumental connections do not. The results highlight the importance of friendship in educational environments and contribute to debates on the behavior spread in social networks.

The Intensity Effect in Adolescent Close Friendships: Implications for Aggressive and Depressive Symptomatology

This study examined the effect of close friendship intensity as a potential amplifier of an adolescent's preexisting tendencies toward depressive and aggressive symptoms. A diverse community sample of 170 adolescents and their closest friends was assessed via multiple methods, and adolescents were followed from age 16 to 17. Results supported the hypothesized effect, with more intense close friendships interacting with higher baseline levels of behavioral symptoms to predict greater relative increases in symptoms over time. Effects were observed for both depressive and aggressive symptoms, and appeared with respect to multiple observational measures of friendship intensity. Findings are interpreted as suggesting that seemingly disparate phenomena (e.g., co-rumination for depression and deviancy-training for aggression) may both be dependent upon the intensity of the adolescent's social connections.

Dynamic pathways between rejection and antisocial behavior in peer networks: Update and test of confluence model

The confluence model theorizes that dynamic transactions between peer rejection and deviant peer clustering amplify antisocial behavior (AB) within the school context during adolescence. Little is known about the links between peer rejection and AB as embedded in changing networks. Using longitudinal social network analysis, we investigated the interplay between rejection, deviant peer clustering, and AB in an ethnically diverse sample of students attending public middle schools (N = 997; 52.7% boys). Adolescents completed peer nomination reports of rejection and antisocial behavior in Grades 6-8. Results revealed that rejection status was associated with friendship selection, and adolescents became rejected if they were friends with others who were rejected. Youth befriended others with similar levels of AB. Significant patterns of peer influence were documented for AB and rejection. As hypothesized, rejected youth with low AB were more likely to affiliate with others with high AB instead of similarly low AB. In contrast, nonrejected youth preferred to befriend others with similarly high or low AB. Results support an updated confluence model of a joint interplay between rejection and AB as ecological conditions that lead to self-organization into deviant clusters in which peer contagion on problem behaviors operates.

Adolescents' externalizing behaviors and antisocial text messaging across the broader peer network: Implications for socialization and selection effects

Adolescents' peer networks provide an important context that can contribute to increases in antisocial behavior. By a process called deviancy training, peers can both model and reinforce these behaviors, thereby conveying group norms about the acceptability of such behaviors. This research examined the relationship between the proportion of adolescents' peers who exchanged antisocial text messages and externalizing behaviors during high school. In Study 1, parent-, teacher-, and self-reports of rule-breaking and aggression were collected for a sample of adolescents (n = 167, 80 girls; 22.2% Black, 51.5% Caucasian, 18.7% Hispanic) during the summers before and after 9th grade. Total text frequency, frequency of antisocial texts, and the proportion of the peer network who exchanged antisocial messages were examined as predictors of antisocial behavior. The proportion of peers who exchanged antisocial texts significantly predicted rule-breaking, but not aggression. Study 2 examined the direction of the relationship documented in Study 1 more thoroughly. Externalizing behaviors at 9th, 10th, and 11th grade were evaluated as predictors of the proportion of the peer network that exchanged texts about antisocial topics (n = 205, 98 girls; 22.4% Black, 53.7% Caucasian, 16.9% Hispanic). Externalizing behaviors predicted the proportion of adolescents' peer network that exchanged antisocial texts in each of the subsequent years, but this proportion of the peer network exchanging antisocial communication did not predict subsequent externalizing behaviors. The findings suggest that the extent to which antisocial communication permeates the peer group is a selection effect.

Prospective prediction of arrests for driving under the influence from relationship patterns with family and friends in adolescence

Driving under the influence (DUI) is dangerous and costly, yet there are few prospective studies on modifiable risk and protective processes that would inform prevention. Middle adolescence, when most individuals are first learning to drive and first using alcohol, may be a particularly salient period for family and friendship influences on DUI risk. In the present study, youth's family and friendship environments were observed and measured at age 16 in a diverse community sample (n=999), and then court records were used to document arrest for DUI through the age of 32years. We first examined the univariate effects of family and friendship variables on later DUI and then fit more comprehensive structural equation models to test predictive effects on the level of construct (e.g., parental monitoring) and environment (e.g., family). Results indicate that parental monitoring (Odds Ratio [OR]=0.77), positive family relations (OR=0.84), prosocial peer affiliation (OR=0.77), and deviant peer affiliation (OR=1.43) at age 16 were individually predictive of arrests for DUI from ages 16 to 32, even after controlling for both teen and parent alcohol use. The comprehensive, multivariate models indicated that the friendship environment was most predictive of arrests for DUI during the follow-up period. Together, these results are consistent with a model in which attenuated family ties contribute to substance-use-based friendships at age 16, which in turn contribute to an increased likelihood of arrest for DUI in later adolescence and early adulthood. Implications for prevention are discussed.

A Developmental Perspective on Reentry: Understanding the Causes and Consequences of Family Conflict and Peer Delinquency during Adolescence and Emerging Adulthood

Despite the uniqueness of an incarceration experience for adolescents, there remains a shortage of research on adolescents and emerging adults who have been recently released from detention centers and are returning home during the transitional time period of "reentry". Drawing from the developmental literature, the current study uses a diverse (54% Black, 20% White, 26% Other Race) longitudinal survey of 337 male adolescents living in the United States to examine the interrelationships among crime, substance use, family conflict, and peer delinquency. A series of cross-lagged dynamic panel data models using four waves of data demonstrate that while family conflict and peer delinquency relate to increased offending and substance use, conflict in the family is a major driving force behind both future family conflict and peer delinquency. Overall, findings suggest that family conflict is an overlooked, but absolutely critical, factor in explaining deviance and deviant peer associations alike for adolescents and emerging adults who have been recently incarcerated and released.

A Developmental Perspective on Reentry: Understanding the Causes and Consequences of Family Conflict and Peer Delinquency during Adolescence and Emerging Adulthood

Despite the uniqueness of an incarceration experience for adolescents, there remains a shortage of research on adolescents and emerging adults who have been recently released from detention centers and are returning home during the transitional time period of "reentry". Drawing from the developmental literature, the current study uses a diverse (54% Black, 20% White, 26% Other Race) longitudinal survey of 337 male adolescents living in the United States to examine the interrelationships among crime, substance use, family conflict, and peer delinquency. A series of cross-lagged dynamic panel data models using four waves of data demonstrate that while family conflict and peer delinquency relate to increased offending and substance use, conflict in the family is a major driving force behind both future family conflict and peer delinquency. Overall, findings suggest that family conflict is an overlooked, but absolutely critical, factor in explaining deviance and deviant peer associations alike for adolescents and emerging adults who have been recently incarcerated and released.