Despite a recent growth in studies on cyberbullying, extant knowledge on the underlying mechanisms of cyberbullying remain limited. The objective of the present study is to explore the dynamics of cyberbullying via traditional bullying, self-control, and delinquent peer association. Specifically, the following hypotheses guide the present study: (1) traditional bullying, low self-control, and delinquent peer association are predictive of cyberbullying, respectively, (2) the interaction between traditional bullying and low self-control has a significant impact on cyberbullying, and (3) the interaction between traditional bullying and delinquent peer association has a significant impact on cyberbullying. The present study relies on five waves of the Korean Youth Panel Survey (KYPS), a representative sample of South Korean adolescents. Data collection occurred annually and respondents were 14 years old at the first wave in 2003. KYPS is an almost gender-equal and racially/ethnically homogenous sample. Results of cross-lagged dynamic panel models show (1) significant effects of traditional bullying on cyberbullying with and without low self-control and delinquent peer affiliation, (2) the respective roles of self-control and delinquent peer association in the prediction of cyberbullying, and (3) an interaction effect between low self-control and traditional bullying on cyberbullying. These findings demonstrate the theoretical validity of self-control theory and social learning theory in online delinquent behavior as well as confirm their cross-cultural generalizability in a non-Western sample. The findings also highlight the importance of investing in early life-course prevention/intervention programs and policies to prevent and/or reduce the occurrence of bullying, regardless of whether it is being perpetrated face-to-face or online, and these programs and policies should also target components to improve self-control and reduce delinquent peer associations.

This study aims to explore joint trajectories of parental supervision and cyberbullying for boys and girls, respectively. Drawing on a longitudinal sample of South Korean youth, we employ a latent group-based trajectory modeling approach to examine overlapping patterns of parental supervision and cyberbullying trajectories, and gender differences in the bivariate overlap. We found that boys with higher levels of parental supervision were more likely to be in the Noninvolved cyberbullying group, whereas girls with the highest level of parental supervision tended to engage in cyberbullying at an early age but soon desisted from it after the initial involvement. Results suggest that effects of parental supervision on cyberbullying may vary across gender.

The link between psychopathy and crime is well-known and a large body of literature has provided empirical support. However, the stability hypothesis of psychopathy has been a critical issue, and there are only a small number of stability studies adopting a developmental perspective. To fill this gap, the current study aims to identify the developmental pathways for the comprehensive psychopathic traits scale and three dimensions across the transition from adolescence to adulthood. The majority of adolescents show stability in their psychopathic traits from adolescent to early adulthood, whereas a small proportion of youth show changes. The findings from this study provide supports for the notion of early identification of young psychopathy. Theoretical and practical implications are discussed.

Early onset delinquency is a risk factor for offending over the life-course. This study aims to identify factors that modify the link between early onset of delinquency and later violence. Results show that engaging delinquency earlier, associating with deviant friends, and experiencing parental abuse have independent impacts on increased risk of violence. Also, early onset has positive interactions with peer delinquency and parental abuse. These findings enhance our understanding of the mechanisms through which early onset of delinquency is related to later violence and imply the importance of family- and school-based early interventions. Findings also highlight the importance of considering interactions between early onset delinquency and social risk factors in refining theories used to explain violence throughout the life course.

Drawing on theoretical propositions of general strain theory (GST), the current study aims to examine whether general victimization as a source of criminogenic strain predicts two different types of bullying, traditional and cyberbullying perpetrations, and whether negative emotionality, such as trait-based anger and depression, conditions the effects of general victimization on bullying. Using a Korean adolescent sample, we adopt cross-lagged dynamic panel models to investigate the longitudinal effects and interactions of strain and negative emotionality. The results indicate a significant influence of general victimization on both types of bullying perpetrations, as expected, while the conditioning effects of negative emotionality are found only for traditional bullying, which may reflect differences in the nature of the two different forms of bullying.