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Search: authors:"Catharina E. M. van Beijsterveldt"

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Genetic and environmental influences on conduct and antisocial personality problems in childhood, adolescence, and adulthood

Conduct problems in children and adolescents can predict antisocial personality disorder and related problems, such as crime and conviction. We sought an explanation for such predictions by performing a genetic longitudinal analysis. We estimated the effects of genetic, shared environmental, and unique environmental factors on variation in conduct problems measured at childhood and ...

Attention Deficit Hyperactivity Disorder Symptoms and Low Educational Achievement: Evidence Supporting A Causal Hypothesis

Attention Deficit Hyperactivity Disorder (ADHD) and educational achievement are negatively associated in children. Here we test the hypothesis that there is a direct causal effect of ADHD on educational achievement. The causal effect is tested in a genetically sensitive design to exclude the possibility of confounding by a third factor (e.g. genetic pleiotropy) and by comparing ...

Heritability of Behavioral Problems in 7-Year Olds Based on Shared and Unique Aspects of Parental Views

Professor Award (PAH/6635) granted to D. I. Boomsma. Complaince with ethical standards Conflict of interest Iryna O. Fedko, Laura W. Wesseldijk, Michel G. Nivard, Jouke-Jan Hottenga, Catharina E. M. van ... Beijsterveldt, Christel M. Middeldorp, Meike Bartels, Dorret I. Boomsma declare no conflict of interest. Human and animal rights and Informed consent Twin families are voluntarily registered with the NTR and the

Individual Differences in Exercise Behavior: Stability and Change in Genetic and Environmental Determinants From Age 7 to 18

Exercise behavior during leisure time is a major source of health-promoting physical activity and moderately tracks across childhood and adolescence. This study aims to investigate the absolute and relative contribution of genes and the environment to variance in exercise behavior from age 7 to 18, and to elucidate the stability and change of genetic and shared environmental ...

The Prenatal Environment in Twin Studies: A Review on Chorionicity

Conflict of Interest Kristine Marceau, Minni T. B. McMaster, Taylor F. Smith, Joost G. Daams, Catharina E. M. van Beijsterveldt, Dorret I. Boomsma, and Valerie S. Knopik declare that they have no conflicts

Childhood ODD and ADHD Behavior: The Effect of Classroom Sharing, Gender, Teacher Gender and Their Interactions

One criterion for a diagnostic and statistical manual of mental disorders (DSM-IV) diagnosis of attention deficit hyperactivity disorder (ADHD) and oppositional defiant disorder (ODD) is that symptoms are present in at least two settings, and often teacher ratings are taken into account. The short Conners’ Teacher Rating Scales—Revised (CTRS-R) is a widely used standardized ...

Estimation of Genetic Relationships Between Individuals Across Cohorts and Platforms: Application to Childhood Height

Combining genotype data across cohorts increases power to estimate the heritability due to common single nucleotide polymorphisms (SNPs), based on analyzing a Genetic Relationship Matrix (GRM). However, the combination of SNP data across multiple cohorts may lead to stratification, when for example, different genotyping platforms are used. In the current study, we address issues of ...

Heritability Estimates of Body Size in Fetal Life and Early Childhood

Background The objective was to estimate the heritability for height and weight during fetal life and early childhood in two independent studies, one including parent and singleton offsprings and one of mono- and dizygotic twins. Methods This study was embedded in the Generation R Study (n = 3407, singletons) and the Netherlands Twin Register (n = 33694, twins). For the ...