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Aggression can be contagious : longitudinal associations between proactive aggression and reactive aggression among young twins
(Wiley, 2015-09)
The present study examined sibling influence over reactive and proactive aggression in a sample of 452 same‐sex twins (113 male dyads, 113 female dyads). Between and within siblings influence processes were examined as a ...
Friendships and deviancy training in young children
(Emerald, 2015-04-13)
Purpose
The purpose of this study was to test a new approach to deviancy training, that is, the shaping and reinforcing of disruptive behaviors in social interaction, which considers not only reinforcement, but also the ...
Associations between mother-child relationship quality and adolescent adjustment : using a genetically controlled design to determine the direction and magnitude of effects
(Sage, 2016-05)
This study used a genetically controlled design to examine the direction and the magnitude of effects in the over-time associations between
perceived relationship quality with mothers and adolescent maladjustment (i.e., ...
Links between friends' physical aggression and adolescents' physical aggression : what happens if gene-environment correlations are controlled?
(Sage, 2016-05)
Exposure to deviant friends has been found to be a powerful source of influence on children’s and adolescents’ aggressive behavior. However, the contribution of deviant friends may have been overestimated because of a ...
Peer victimization and anxiety in genetically vulnerable youth : the protective roles of teachers' self-efficacy and anti-bullying classroom rules
(Springer, 2015-08)
Many victimized youngsters are at risk of developing internalizing problems, and this risk seems to be especially pronounced when they are genetically vulnerable for these problems. It is unclear, however, whether protective ...
Gene-environment correlation linking aggression and peer victimization : do classroom behavioral norms matter?
(Springer, 2015)
Using a genetically informed design based on 197 Monozygotic and Dizygotic twin pairs assessed in grade 4, this study examined 1) whether, in line with a gene-environment correlation (rGE), a genetic disposition for physical ...
Phenotypic and genetic associations between reading comprehension, decoding skills, and ADHD dimensions : evidence from two population-based studies
Phenotypic and genetic associations between reading and ADHD
(Wiley, 2015-02)
BACKGROUND:
The phenotypic and genetic associations between decoding skills and ADHD dimensions have been documented but less is known about the association with reading comprehension. The aim of the study is to document ...
Complex effects of dyslexia risk factors account for ADHD-traits : evidence from two independent samples
(Wiley, 2016-08-08)
Background: Developmental dyslexia (DD) and attention deficit/hyperactivity disorder (ADHD) are among the most common neurodevelopmental disorders, whose etiology involves multiple risk factors. DD and ADHD co-occur in the ...
The dark side of friends : a genetically informed study of victimization within early adolescents’ friendships
(Taylor & Francis, 2015)
Using a genetically informed twin design, this study examined (a) whether, in line with gene–environment correlation (rGE), a genetic disposition for anxiety puts children at risk of being victimized by a close friend or ...
The expression of genetic risk for aggressive and non-aggressive antisocial behavior is moderated by peer group
(Springer, 2015-07)
Numerous studies have shown that aggressive and non-aggressive antisocial behaviors are important precursors of later adjustment problems. There is also strong empirical evidence that both types of antisocial behavior are ...