Sonja Perren

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BACKGROUND Cyber-bullying (i.e., bullying via electronic means) has emerged as a new form of bullying that presents unique challenges to those victimised. Recent studies have demonstrated that there is a significant conceptual and practical overlap between both types of bullying such that most young people who are cyber-bullied also tend to be bullied by(More)
BACKGROUND Although the prevalence of bully/victim problems in school-age children and adolescents has been investigated in many countries, only a few studies have been carried out among younger children. This study examines social behaviors and peer relationships of children involved in bully/victim problems in kindergarten. METHODS Three hundred and(More)
The transition to parenthood is often accompanied by depression and stress. Several studies have established risk factors for postpartum depression, e.g., antenatal depression. However, only a few studies have involved fathers. Moreover, most studies focus on the prevalence of depression instead of intraindividual changes over time. Our study investigated(More)
OBJECTIVE Theories of health behavior are usually tested on the between-person level. Associations between variables on the between- and the within-person level, however, can differ substantially. Thus, in order to better understand intrapersonal processes in the domain of health behavior, studies applying within-person analyses are needed. This study(More)
The current cross-sectional study investigated basal and stress-challenged hypothalamic-pituitary-adrenocortical (HPA) system function in 102 five-year old kindergarten children (59 boys, 43 girls) who had been assessed by a comprehensive psychological and behavioral test battery. Baseline HPA system activity was significantly increased in girls when(More)
The study investigated the predictive value of pro-social behaviour for developmental pathways of behavioural and emotional problems at kindergarten age. One hundred and sixty children participated in the study at the ages of 5 and 6. Teachers and parents completed the Strengths and Difficulties Questionnaire; children completed the Berkeley Puppet(More)
BACKGROUND Evidence indicates that being a victim of bullying or peer aggression has negative short- and long-term consequences. In this study, we investigated the mediating and moderating role of two types of attributional mechanisms (hostile and self-blaming attributions) on children's maladjustment (externalizing and internalizing problems). METHODS In(More)
Sonja Perren, Jacobs Center for Productive Youth Development, University of Zürich, Switzerland Lucie Corcoran, School of Education, Trinity College Dublin, Ireland Helen Cowie, Faculty of Health and Medical Sciences, University of Surrey, United Kingdom Francine Dehue, Department of Psychology, Open University of the Netherlands, Heerlen, the Netherlands(More)
Cyberbullying, a modern form of bullying performed using electronic forms of contact (e.g., SMS, MMS, Facebook, YouTube), has been considered as being worse than traditional bullying in its consequences for the victim. This difference was mainly attributed to some specific aspect that are believed to distinguish cyberbullying from traditional bullying: an(More)