Now showing items 21-30 of 49
Complex effects of dyslexia risk factors account for ADHD-traits : evidence from two independent samples
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 ...
Early warm-rewarding parenting moderates the genetic contributions to callous-unemotional traits in childhood
Warm-rewarding genetic callous-unemotional
Background Previous gene–environment interaction studies of CU traits have relied on the candidate gene approach, which does not account for the entire genetic load of complex phenotypes. Moreover, these studies have ...
Can sports mitigate the effects of depression and aggression on peer rejection?
Sport, mental health, and peer rejection
This study examined whether sports participation moderates the longitudinal link of depressive and aggressive symptoms with increased peer rejection. The sample consisted of 291 adolescents (50.5% girls), assessed at ages ...
Gene-environment correlation linking aggression and peer victimization : do classroom behavioral norms matter?
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 ...
Validation of an adapted procedure to collect hair for cortisol determination in adolescents
Adaption of the collection protocol for hair cortisol determination
Introduction In the last decades, cortisol has been extensively studied in association to early exposure to adversity as well as in the etiology of a number of physical and mental problems. While saliva and blood samples ...
Prospective links between friendship and early physical aggression : preliminary evidence supporting the role of friendship quality through a dyadic intervention
Friendship quality and early physical aggression
(Wayne State University Press, 2016)
Positive friendships have been related to decreasing levels of children’s physical aggression over time. While this evidence calls for interventions aimed at helping children build good-quality friendships, tests of causality ...
Heterogeneity in the development of proactive and reactive aggression in childhood : Common and specific genetic-environmental factors
(Public Library of Science, 2017-12-06)
Background Few studies are grounded in a developmental framework to study proactive and reactive aggression. Furthermore, although distinctive correlates, predictors and outcomes have been highlighted, proactive and ...
Genetic and environmental influences on height from infancy to early adulthood : an individualbased pooled analysis of 45 twin cohorts
(Nature Publishing Group, 2016-06-23)
Height variation is known to be determined by both genetic and environmental factors, but a systematic description of how their influences differ by sex, age and global regions is lacking. We conducted an individual-based ...
The gene–environmental architecture of the development of adolescent substance use
Gene–environmental architecture of adolescent substance use
(Cambridge University Press, 2018-02-19)
Background: Using a longitudinal twin design and a latent growth curve/autoregressive approach, this study examined the genetic-environmental architecture of substance use across adolescence. Methods: Self-reports of ...
Persistence and innovation effects in genetic and environmental factors in negative emotionality during infancy : a twin study
(Public Library of Science, 2017-04-27)
Background Difficult temperament in infancy is a risk factor for forms of later internalizing and externalizing psychopathology, including depression and anxiety. A better understanding of the roots of difficult temperament ...