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Evidence for a Causal Association of Low Birth Weight and Attention Problems
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Groen-Blokhuis, Maria M.; Middeldorp, Christel M.; van Beijsterveldt, Catharina E. M.; Boomsma, Dorret I. – Journal of the American Academy of Child & Adolescent Psychiatry, 2011
Objective: Low birth weight (LBW) is associated with attention problems (AP) and attention-deficit/hyperactivity disorder (ADHD). The etiology of this association is unclear. We investigate whether there is a causal influence of birth weight (BW) on AP and whether the BW effect is mediated by catch-up growth (CUG) in low-BW children. Method:…
Descriptors: Attention Deficit Hyperactivity Disorder, Twins, Body Weight, Etiology
Attention Problems and Attention-Deficit/Hyperactivity Disorder in Discordant and Concordant Monozygotic Twins: Evidence of Environmental Mediators
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Lehn, Hanne; Derks, Eske M.; Hudziak, James J.; Heutink, Peter; van Beijsterveldt, Toos; Boomsma, Dorret I. – Journal of the American Academy of Child and Adolescent Psychiatry, 2007
Objective: To study familial and nonfamilial environmental influences on attention problems and attention-deficit/hyperactivity disorder (ADHD) in monozygotic twins discordant and concordant-high and low for these traits. Method: Ninety-five twin pairs from The Netherlands Twin Register were selected. Longitudinal survey data were collected at 1,…
Descriptors: Foreign Countries, Environmental Influences, Behavior Problems, Motor Development