Longitudinal data from a large sample of twins participating in the Netherlands Twin Register (n = 42,827, age range 3-16) were analyzed to investigate the genetic and environmental contributions to childhood aggression. Genetic auto-regressive (simplex) models were used to assess whether the same genes are involved or whether new genes come into…

Background: Atypical speech and language development is one of the most common developmental difficulties in young children. However, which clinical signs characterize atypical speech-language development at what age is not clear. Aim: To achieve a national and valid consensus on clinical signs and red flags (i.e. most urgent clinical signs) for…

This study examines the effects of acute alcohol intoxication on adolescents' school performance. In the 2007-2015 period, 3,317 adolescents (ages 12 to 17 years) were treated for acute alcohol intoxication, and 37 adolescents were admitted to the hospital twice. Alcohol intoxication has an overrepresentation in "low" school levels. The…

This paper reports on the findings in the first phase of a design-based research project as part of a large-scale intervention study in Dutch kindergartens. The project aims at enhancing differentiated instruction and evaluating its effects on children's development, in particular high-ability children. This study investigates relevant…

The present study explored cultural differences in parental beliefs about motor development across 2 Western cultures: Israel and the Netherlands. Can 2 cultural models be distinguished regarding infant motor development in Israel and the Netherlands or are parental beliefs about motor development similar across these cultures? Using a…

Aim: General developmental outcome is known to be good in school-aged children who experienced febrile seizures. We examined cognitive and behavioural outcomes in preschool children with febrile seizures, including language and executive functioning outcomes. Method: This work was performed in the Generation R Study, a population-based cohort…

The authors of the present study addressed the measurement of temperament by examining the convergence between observational and questionnaire measures and the occurrence of contrast effects in parental ratings of nontwin siblings on the Children's Behavior Questionnaire. Fathers', mothers', and observers' ratings of 94 early-school-age sibling…

This study explores educators' reflections on professional childcare practice in different national contexts. The data were collected by showing video clips of classroom activities in Japanese, Dutch and German pre-schools to experienced German and Dutch pre-school teachers. The clips were used to elicit their opinions on playing and learning in…

The literature on somatic complaints in children without a clear physical medical cause often demonstrates connections with various psychological factors, such as negative emotions and problems handling them, poor self-image, and coping potential. We entered these elements into a structural model to elucidate the relationships among them and…

Background: Previous studies suggest that failure to thrive in infancy may be associated with adverse sequelae in childhood. Although cognitive abilities have been extensively investigated, little systematic research is available on other aspects of development. Methods: Eighty-nine children who failed to thrive as infants and 91 controls were…