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Environmental influence of problematic social relationships on adolescents' daily cortisol secretion : a monozygotic twin-difference study
(Cambridge University Press, 2017-02)
BACKGROUND:
This study investigated the potential environmental effects of peer victimization and the quality of relationships with parents and friends on diurnal cortisol secretion in mid-adolescence.
METHOD: ...
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 ...
Persistent genetic and family-wide environmental contributions to early number knowledge and later achievement in mathematics
Etiology of early math knowledge and skills development
(SAGE, 2017-10-03)
This study investigated the stable and transient genetic and environmental contributions to
individual differences in number knowledge in the transition from preschool (age 5) to Grade 1
(age 7) and to the predictive ...
Links between the mother-adolescent and father-adolescent relationships and adolescent depression : a genetically informed study
Links between the parent-adolescent Relationship quality and depression
(Taylor & Francis, 2017-08-18)
This study examined the unique roles of support and conflict in the relationship with the
mother and the father in predicting changes in adolescents’ depressive symptoms over a 1-
year period. Potential moderating effects ...
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 ...
Contagion of anxiety symptoms among adolescent siblings : a twin study
(Wiley, 2017-03)
This study examined whether social contagion of anxiety symptoms is present between siblings during early adolescence and whether this process is moderated by sex, relationship quality, and zygosity. Based on 634 monozygotic ...
Twin classroom dilemma : to study together or separately?
(American Psychological Association, 2018-07)
There is little research to date on the academic implications of teaching twins in the same or different classroom. Consequently, it is not clear whether twin classroom separation is associated with positive or negative ...
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 reactive ...
Twin’s birth-order differences in height and body mass index from birth to old age: a pooled study of 26 twin cohorts participated in the CODATwins project
(Australian Academic Press, 2016-04)
We analyzed birth order differences in means and variances of height and body mass index (BMI) in monozygotic (MZ) and dizygotic (DZ) twins from infancy to old age. The data were derived from the international CODATwins ...
Serotonin transporter promoter methylation in peripheral cells and neural responses to negative stimuli : a study of adolescent monozygotic twins
(Springer Nature, 2018-08-08)
Several studies have examined associations between peripheral DNA methylation patterns of the serotonin transporter
gene (SLC6A4) promoter and symptoms of depression and anxiety. The SLC6A4 promoter methylation has also ...