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Article
Open AccessThe Intensity of Formal Child-Care Attendance Decreases the Shared Environment Contribution to School Readiness: A Twin Study
The purpose of this study was to explore if child-care intensity (hours/weeks) and age of onset could moderate genetic and environmental contributions to school readiness. A sample of 648 (85% Whites; 50% Fema...
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Article
Adolescents and Social Media: Longitudinal Links Between Types of Use, Problematic Use and Internalizing Symptoms
Studies examining the associations between adolescent social media use and depression/anxiety symptoms show inconsistent results and do not elucidate the direction of associations. Differences in how studies o...
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Article
Longitudinal patterns of polysubstance use throughout adolescence: association with adult substance use and psychosocial outcomes controlling for preadolescent risk factors in a male cohort
Inconsistent reports raise the question of the extent to which poor adult outcomes are associated with adolescent polysubstance use (PSU: alcohol, marijuana, other illicit drugs) above and beyond earlier risk ...
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Article
Developmental Patterns of Gambling Participation and Substance use Throughout Adolescence in a Population Birth Cohort
This study investigated adolescents’ single and co-occurring developmental patterns of gambling participation and substance use and their association with gambling and substance use-related issues at age 17, c...
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Article
Link Between Peer Victimization in College and Cortisol Secretion: Roles of Genetic Vulnerabilities and Social Support
It is unclear whether peer victimization in college interacts with genetic vulnerabilities or social support in predicting cortisol secretion. This issue was addressed using a sample of 162 Monozygotic and 237...
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Article
Alcohol, Marijuana and Other Illicit Drugs Use Throughout Adolescence: Co-occurring Courses and Preadolescent Risk-Factors
This study examined developmental patterns of co-occurrent alcohol, marijuana, and other illicit drugs use during adolescence and the associated preadolescent risk factors in a longitudinal sample of 926 boys ...
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Article
Open AccessChanging genetic architecture of body mass index from infancy to early adulthood: an individual based pooled analysis of 25 twin cohorts
Body mass index (BMI) shows strong continuity over childhood and adolescence and high childhood BMI is the strongest predictor of adult obesity. Genetic factors strongly contribute to this continuity, but it i...
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Article
Maternal depressive symptoms and children’s cognitive school readiness: the role of gene-environment interplay
Maternal depressive symptoms are a robust risk factor for poor cognitive outcomes in children, yet the role of gene-environment interplay in this association is not well understood. The objective of this study...
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School Social Relations and Child Development: Gene-Environment Interplay
In the past, most theoretical perspectives on human development have focused on environmental causes of differences between children, but the consensus today is that genetic and environmental factors interact ...
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Article
Maternal Parenting Behaviors Amplify Environmental Influences on Developmental Trajectories of Alcohol Use During Adolescence
Compared to peer alcohol use, less is known on how parenting practices may modify genetic and environmental contributions to alcohol use longitudinally across adolescence. This study examined whether two mate...
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Article
Links Between Early Personal Characteristics, Longitudinal Profiles of Peer Victimization in School and Victimization in College or at Work
This study used a longitudinal design from age six through age 19 (N = 1206 (603 girls)) to examine the associations between anxious-withdrawal and reactive aggression during childhood, distinct profiles of peer ...
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Article
Victimization by Friends and Victimization by Other Peers: Common Risk Factors or Mutual Influence?
Much research effort has been placed on understanding peer victimization. However, few studies have focused on victimization within friendships, which affects up to half of adolescents and bears similar conseq...
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Article
Open AccessExamining the impact of a social skills training program on preschoolers’ social behaviors: a cluster-randomized controlled trial in child care centers
Preschoolers regularly display disruptive behaviors in child care settings because they have not yet developed the social skills necessary to interact prosocially with others. Disruptive behaviors interfere wi...
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Article
Association Between Peer Victimization and Parasomnias in Children: Searching for Relational Moderators
This cross-sectional study examined the moderating role of support from three key figures (mothers, teachers, friends) in the association between peer victimization and parasomnias in childhood. The sample con...
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Article
A Genetic Cross-Lagged Study of the Longitudinal Association Between Anxiety and Depressive Symptoms During Childhood
This study documented the etiology contributions between anxiety symptoms (AS) and depressive symptoms (DS) from ages 6–12 years. Teachers assessed AS and DS in 1112 twins at 5 time points. A genetic cross-lag...
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Article
Genetic and environmental influences on developmental trajectories of adolescent alcohol use
Adolescent alcohol use demonstrates distinct developmental trajectories with different times of onset, levels, and rates of growth. Twin research on adolescent alcohol use has shown that genetic influences are...
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Article
Genetic Correlation between Child Callous-Unemotional Behaviors and Fear Recognition Deficit: Evidence for a Neurocognitive Endophenotype
This study investigates emotion recognition deficits as candidate neurocognitive endophenotypes for callous-unemotional (CU) behaviors. Using a twin design, we tested genetic correlations between child CU beha...
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Article
The Genetic and Environmental Etiology of Shyness Through Childhood
The objective of this study was to examine the genetic and environmental contributions to shyness throughout the school-age period. Participants were 553 twin pairs from the ongoing prospective longitudinal Qu...
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Article
Longitudinal Links Between Gambling Participation and Academic Performance in Youth: A Test of Four Models
Gambling participation and low academic performance are related during adolescence, but the causal mechanisms underlying this link are unclear. It is possible that gambling participation impairs academic perfo...
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Article
Open AccessSerotonin transporter promoter methylation in peripheral cells and neural responses to negative stimuli: A study of adolescent monozygotic twins
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 h...
