Youth's Conceptions of Adolescence Predict Longitudinal Changes in Prefrontal Cortex Activation and Risk Taking During Adolescence

Neural Tracking of Perceived Parent, but Not Peer, Norms Is Associated with Longitudinal Changes in Adolescent Attitudes about Externalizing Behaviors

Adolescents' perceptions of parent and peer norms about externalizing behaviors influence the extent to which they adopt similar attitudes, yet little is known about how the trajectories of perceived parent and peer norms are related to trajectories of personal attitudes across adolescence. Neural development of midline regions implicated in self-other processing may underlie developmental changes in parent and peer influence. Here, we examined whether neural processing of perceived parent and peer norms in midline regions during self-evaluations would be associated with trajectories of personal attitudes about externalizing behaviors. Trajectories of adolescents' perceived parent and peer norms were examined longitudinally with functional neuroimaging (n = 165; ages 11-16 years across three waves; 86 girls, 79 boys; 29.7% White, 21.8% Black, 35.8% Latinx, 12.7% other/multiracial). Behavioral results showed perceived parent norms were less permissive than adolescents' own attitudes about externalizing behaviors, whereas perceived peer norms were more permissive than adolescents' own attitudes, effects that increased from early to middle adolescence. Although younger adolescents reported less permissive attitudes when they spontaneously tracked perceived parent norms in the ventromedial and medial pFCs during self-evaluations, this effect weakened as they aged. No brain-behavior effects were found when tracking perceived peer norms. These findings elucidate how perceived parent and peer norms change in parallel with personal attitudes about externalizing behaviors from early to middle adolescence and underscore the importance of spontaneous neural tracking of perceived parent norms during self-evaluations for buffering permissive personal attitudes, particularly in early adolescence.

Typicality and trajectories of problematic and positive behaviors over adolescence in eight countries

In this study, we examine the predictions of a storm and stress characterization of adolescence concerning typicality and trajectories of internalizing, externalizing, and wellbeing from late childhood through late adolescence. Using data from the Parenting Across Cultures study, levels and trajectories of these characteristics were analyzed for 1,211 adolescents from 11 cultural groups across eight countries. Data were longitudinal, collected at seven timepoints from 8 to 17 years of age. Results provide more support for a storm and stress characterization with respect to the developmental trajectories of behavior and characteristics from childhood to adolescence or across the adolescent years than with respect to typicality of behavior. Overall, adolescents' behavior was more positive than negative in all cultural groups across childhood and adolescence. There was cultural variability in both prevalence and trajectories of behavior. The data provide support for arguments that a more positive and nuanced characterization of adolescence is appropriate and important.

The role of classroom- and individual-level teen stereotypes in Chinese adolescents' academic adjustment: A multilevel analysis

Adolescence is often portrayed in a negative light in Western culture, with teens being viewed as rebellious and irresponsible. Yet, there is substantial cultural and individual variability in views of teens. The empirical research to date is limited in that it mainly examines whether teen stereotypes are influential at the individual level. Teen stereotypes might also be perpetuated at the classroom level, which may have important implications for adolescent adjustment over time. Focusing on adolescents in Chinese culture where the teen years are often viewed in a positive light, this two-wave longitudinal study employed multi-level analyses to investigate whether stereotypes of adolescence at the classroom level play a role in Chinese adolescents' academic adjustment over time (N = 785; 55% girls; mean age = 12.96 years). Consistent with prior research on views of teens, the present analyses suggested that teen stereotypes regarding family obligation and school engagement at the individual level predicted adolescents' value of school and self-regulated learning strategies over the seventh grade. More importantly, classroom-level teen stereotypes were also largely predictive of adolescents' value of school and self-regulated learning strategies over time, controlling for their earlier academic adjustment, individual-level teen stereotypes, and classroom-level adjustment. Taken together, these findings indicate that stereotypes of adolescence in classroom or peer settings may contribute to adolescents' academic adjustment during this phase. The findings also provide a potential foundation for interventions aimed at promoting adolescents' positive development via changing teen stereotypes in the classroom.

Understanding the effects of personal factors and situational factors for adolescent cyberbullying perpetration: The roles of internal states and parental mediation

INTRODUCTION

The risk and protective factors of cyberbullying perpetration have been widely investigated. Less attention is paid to explore the effects of personal and situational factors, internal states, and external states in an integrated framework. This study aims to fill this void by developing an integrated framework to investigate the effects of power imbalance, the online disinhibition effect, internal states, and parental mediation on cyberbullying among Chinese adolescents.

METHODS

Multistage cluster random sampling was employed with 1103 adolescents (M_age = 15.3, 52.5% girls) who responded to the questionnaire. Structural equation modeling (SEM) was conducted.

RESULTS

Proficiency in technology use was directly related to cyberbullying. Social status among peers was found to be not only directly related to cyberbullying but also to operate through low self-control to predict cyberbullying. The online disinhibition effect did not directly correlate to cyberbullying but operated through moral disengagement and low self-control to predict cyberbullying. Notably, the results showed that physical power was neither directly correlated to cyberbullying nor aligned with moral disengagement or low self-control to predict cyberbullying. The multiple-group comparison analysis revealed that parental mediation moderated the effects of the online disinhibition effect on cyberbullying. However, this study found that parental mediation had no buffering effects when examining the relationships between physical power, social status, technology use, and cyberbullying.

CONCLUSIONS

Findings suggest that cyberbullying prevention should consider the effects of both internal states and external factors. The study has provided theoretical and practical implications for understanding and tackling the widespread problem of cyberbullying among adolescents.

A Call for Greater Attention to Culture in the Study of Brain and Development

Despite growing research on neurobiological development, little attention has been paid to cultural and ethnic variation in neurodevelopmental processes. We present an overview of the current state of developmental cognitive neuroscience with respect to its attention to cultural issues. Analyses based on 80 publications represented in five recent meta-analyses related to adolescent developmental neuroscience show that 99% of the publications used samples in Western countries. Only 22% of studies provided a detailed description of participants' racial/ethnic background, and only 18% provided for socioeconomic status. Results reveal a trend in developmental cognitive neuroscience research: The body of research is derived not only mostly from Western samples but also from participants whose race/ethnicity is unknown. To achieve a holistic perspective on brain development in different cultural contexts, we propose and highlight an emerging interdisciplinary approach-developmental cultural neuroscience-the intersection of developmental psychology, cultural psychology, and cognitive neuroscience. Developmental cultural neuroscience aims to elucidate cultural similarities and differences in neural processing across the life span. We call attention to the importance of incorporating culture into the empirical investigation of neurodevelopment.

Navigating the Social Environment in Adolescence: The Role of Social Brain Development

Successful navigation of the social environment is dependent on a number of social cognitive processes, including mentalizing and resistance to peer influence. These processes continue to develop during adolescence, a time of significant social change, and are underpinned by regions of the social brain that continue to mature structurally and functionally into adulthood. In this review, we describe how mentalizing, peer influence, and emotion regulation capacities develop to aid the navigation of the social environment during adolescence. Heightened susceptibility to peer influence and hypersensitivity to social rejection in adolescence increase the likelihood of both risky and prosocial behavior in the presence of peers. Developmental differences in mentalizing and emotion regulation, and the corticosubcortical circuits that underpin these processes, might put adolescents at risk for developing mental health problems. We suggest how interventions aimed at improving prosocial behavior and emotion regulation abilities hold promise in reducing the risk of poor mental health as adolescents navigate the changes in their social environment.

Youth's Negative Stereotypes of Teen Emotionality: Reciprocal Relations with Emotional Functioning in Hong Kong and Mainland China

In Western society, there has been a history of perceiving adolescence as a time of "storm and stress," during which youth may go through heightened negative experiences such as conflict with parents, disengagement from school, and emotional dysfunction. Despite increasing attention to positive youth development, such negative stereotypes of adolescence may be held by youth themselves, which undermine their behavioral and neural development. However, youth's stereotypes of teen emotionality in particular (i.e., beliefs that teens typically experience greater emotionality than younger children) and the role of such stereotypes in youth's emotional functioning have not been examined. This longitudinal study investigated the reciprocal relations between youth's negative stereotypes of teen emotionality and their emotional functioning (i.e., emotional expressivity and emotion regulation) in Hong Kong and Mainland China, two regions in China sharing Chinese cultural traditions but differing in the extent of exposure to Western influence (N = 1269; 55% girls; M age = 12.86 years). Although youth in Hong Kong saw the teen years as a time of heightened emotionality more than did their counterparts in Mainland China, such stereotypes predicted youth's greater emotional expressivity and less emotion regulation over the 7th grade in both regions. Moreover, in both regions, youth's negative expressivity reciprocally predicted their stronger stereotypes of teen emotionality over time. Taken together, these findings demonstrate the role of youth's stereotypes of teen emotionality in shaping their emotional expressivity and emotion regulation during early adolescence, and also the role of youth's negative expressivity in reinforcing their stereotypes. Moreover, these findings highlight the relevance of the Western-popularized perception of adolescence as a time of "storm and stress" in non-Western regions in a world of increasing globalization and societal change.

Brain and Cognitive Development in Adolescents with Anorexia Nervosa: A Systematic Review of fMRI Studies

Anorexia nervosa (AN) is an eating disorder often occurring in adolescence. AN has one of the highest mortality rates amongst psychiatric illnesses and is associated with medical complications and high risk for psychiatric comorbidities, persisting after treatment. Remission rates range from 23% to 33%. Moreover, weight recovery does not necessarily reflect cognitive recovery. This issue is of particular interest in adolescence, characterized by progressive changes in brain structure and functional circuitries, and fast cognitive development. We reviewed existing literature on fMRI studies in adolescents diagnosed with AN, following PRISMA guidelines. Eligible studies had to: (1) be written in English; (2) include only adolescent participants; and (3) use block-design fMRI. We propose a pathogenic model based on normal and AN-related neural and cognitive maturation during adolescence. We propose that underweight and delayed puberty-caused by genetic, environmental, and neurobehavioral factors-can affect brain and cognitive development and lead to impaired cognitive flexibility, which in turn sustains the perpetuation of aberrant behaviors in a vicious cycle. Moreover, greater punishment sensitivity causes a shift toward punishment-based learning, leading to greater anxiety and ultimately to excessive reappraisal over emotions. Treatments combining physiological and neurobehavioral rationales must be adopted to improve outcomes and prevent relapses.

Countering Youth's Negative Stereotypes of Teens Fosters Constructive Behavior

Adolescence can be a time of unconstructive behavior for many youth. This research examined if an intervention countering youth's stereotypes of teens as irresponsible fosters their constructive behavior. In two experimental intervention studies (Ns = 124 and 319) with seventh graders, stereotypes of teens as irresponsible were described as inaccurate portrayals; youth then provided their own observations of teens acting responsibly. Youth in this counterstereotyping intervention (vs. the control) held higher intentions for academic engagement and performed better on an academic task (i.e., a word-search puzzle). Over the 3 days following the intervention, their academic engagement was higher. Youth's risk taking was also reduced. Redirecting youth to see teens as responsible has the potential to provide a foundation for flourishing.

The Teenage Brain: Public Perceptions of Neurocognitive Development during Adolescence

Over the past decade, important insights have been obtained into the neurocognitive development during adolescence. To better understand how these neuroscientific insights impact the real world, we investigated how neuroscience has shaped public perceptions of the "teenage brain" and if these perceptions influence adolescent behavior. When asking to generate free associations with the word "teenage brain," adolescents ( n = 363, M_age = 14.47 years) and parents ( n = 164, M_age = 47.16 years) more often mention undesirable behaviors (e.g., "irresponsible") than desirable behaviors (e.g., "creative"). Despite these dominantly negative associations, priming adolescents with positively versus negatively framed statements about adolescent brain development did not influence their subsequent risk-taking, impulsivity, and performance on response-to-failure tasks. However, we did find a more nuanced effect, related to how much adolescents agreed with the negative versus positive priming statements: Adolescents' negative beliefs about adolescent brain development reinforced negative behaviors by increased risk-taking behaviors, and adolescents' positive beliefs reinforced positive behaviors by using positive strategies to cope with academic setbacks. The current findings underline the impact of views that build up over time and that these are not easily influenced by a one-time instance of information but rather reinforce the impact of new information. To prevent negative perceptions of the teenage brain from becoming self-fulfilling prophecies, it is important that communication about adolescent neurocognitive development is framed in a more balanced way. Neuroscientists need to be more aware of how their research impacts the real world, before we are fully ready for "real-world neuroscience."

Opportunities for Neurodevelopmental Plasticity From Infancy Through Early Adulthood

Multiple and rapid changes in brain development occur in infancy and early childhood that undergird behavioral development in core domains. The period of adolescence also carries a second influx of growth and change in the brain to support the unique developmental tasks of adolescence. This special section documents two core conclusions from multiple studies. First, evidence for change in brain-based metrics that underlie cognitive and behavioral functions are not limited to narrow windows in development, but are evident from infancy into early adulthood. Second, the specific evident changes are unique to challenges and goals that are salient for a respective developmental period. These brain-based changes interface with environmental inputs, whether from the child's broader ecology or at an individual level.