ERIC Number: EJ826525
Record Type: Journal
Publication Date: 2009-Feb
Abstractor: As Provided
A Common Genetic Factor Explains the Covariation among ADHD ODD and CD Symptoms in 9-10 Year Old Boys and Girls
Tuvblad, Catherine; Zheng, Mo; Raine, Adrian; Baker, Laura A.
Journal of Abnormal Child Psychology, v37 n2 p153-167 Feb 2009
Previous studies examining the covariation among Attention Deficit Hyperactivity Disorder (ADHD), Oppositional Defiant Disorder (ODD) and Conduct Disorder (CD) have yielded inconsistent results. Some studies have concluded that the covariation among these symptoms is due to common genetic influences, whereas others have found a common environmental overlap. The present study investigated the genetic and environmental correlations among these three childhood disorders, based on a sample of 1,219 twins, age 9-10 years. A latent externalizing behavior factor was found to explain the covariance among ADHD, ODD and CD symptoms. Genetic influences explained more than half of the variance in this externalizing factor in both boys and girls. There were also unique genetic and environmental influences in each set of symptoms, suggesting some etiological independence of the three disorders. Our findings have implications for molecular genetic studies trying to identify susceptibility genes for these disorders.
Descriptors: Attention Deficit Hyperactivity Disorder, Genetics, Environmental Influences, Gender Differences, Child Behavior, Behavior Problems, Behavior Disorders, Symptoms (Individual Disorders), Twins, Children, Molecular Structure, At Risk Persons
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Authoring Institution: N/A