Article
Genetic and Environmental Influences on the Relation Between Attention Problems and Attention Deficit Hyperactivity Disorder
11 Dec 2007
Abstract excerpt
OBJECTIVE: The assessment of symptoms of ADHD in children is usually based on a clinical interview or a behavior checklist. The aim of the present study is to investigate the extent to which these instruments measure an underlying construct and to estimate the genetic and environmental influences on individual differences in ADHD. METHODS: Maternal ratings were collected on 10,916 twins from 5,458 families. Child...
