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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 ...
The Quebec newborn twin study at 21
(Cambridge University Press, 2019-10-21)
This paper is a revised and updated edition of a previous description of the Quebec Newborn Twin Study (QNTS), an ongoing prospective
longitudinal follow-up of a birth cohort of twins born between 1995 and 1998 in the ...
Longitudinal associations between delinquency, depression and anxiety symptoms in adolescence : testing the moderating effect of sex and family socioeconomic status
(Elsevier, 2018-09-25)
Purpose
To examine the cross-lagged associations between delinquency (nonviolent and violent), depression and anxiety symptoms in adolescence and to test the moderating effect of sex and family socioeconomic status ...
Associations between peer victimization and suicidal ideation and suicide attempt during adolescence : results from a prospective population-based birth cohort
(Elsevier, 2015-11-26)
Objective:To test whether adolescents who are victim-ized by peers are at heightened risk for suicidal ideationand suicide attempt, using both cross-sectional andprospective investigations.Method:Participants are ...
Contribution of genes and environment to the longitudinal association between childhood impulsive‐aggression and suicidality in adolescence
(Wiley, 2019-11-28)
Background
Population‐based and family studies showed that impulsive‐aggression predicts suicidality; however, the underlying etiological nature of this association is poorly understood. The objective was to determine the ...
Early childhood factors associated with peer victimization trajectories from 6 to 17 years of age
(American Academy of Pediatrics, 2020)
OBJECTIVES:
To describe (1) the developmental trajectories of peer victimization from 6 to 17 years of age and (2) the early childhood behaviors and family characteristics associated with the trajectories.
METHODS:
We ...
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 ...
A longitudinal twin study of callous-unemotional traits during childhood
Longitudinal twin callous-unemotional, 1
(American Psychological Association, 2018-05)
Previous research indicates that genetic factors largely account for the stability of callous-unemotional (CU) traits in adolescence. However, the genetic-environmental etiology of the development of CU traits has not been ...
Early warm-rewarding parenting moderates the genetic contributions to callous-unemotional traits in childhood
Warm-rewarding genetic callous-unemotional
(Wiley, 2018-04-23)
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 not ...
The genetic and environmental etiology of the association between vocabulary and syntax in first grade
Etiology of vocabulary and syntax
(Taylor & Francis, 2018-03-09)
This study examined the genetic and environmental etiology of vocabulary, syntax, and their association in first graders. French-speaking same-sex twins (N = 555) completed two vocabulary tests, and two scores of syntax ...