ERIC Number: EJ748443
Record Type: Journal
Publication Date: 2006-Feb
Genetic and Environmental Contributions to Common Psychopathologies of Childhood and Adolescence: A Study of Twins and Their Siblings
Ehringer, Marissa A.; Rhee, Soo Hyun; Young, Susan; Corley, Robin; Hewitt, John K.
Journal of Abnormal Child Psychology, v34 n1 p1-17 Feb 2006
We report findings based on analyses of self-reports of six common adolescent psychopathologies (attention deficit/hyperactivity disorder, ADHD; conduct disorder, CD; oppositional defiant disorder, ODD; generalized anxiety disorder, GAD; separation anxiety disorder, SAD; and major depressive disorder, MDD) in a sample of 1,162 male and female adolescent (12-19 years) twin pairs and 426 siblings. Prevalence statistics for past year and lifetime reports confirm differences between genders for CD, GAD, SAD, and MDD, and a lack of differences between twins and their non-twin siblings. Biometrical modeling was conducted to ascertain the relative influences of genes, and shared and non-shared environments contributing to these disorders. A more robust estimate of these parameters was obtained by including non-twin siblings. Age-specific thresholds were integrated into the analyses to appropriately model the developmental patterns of behavior. We found evidence for both genetic and non-shared environmental influences for all disorders. Shared environmental influences also seem to be important for MDD and lifetime GAD.
Descriptors: Psychopathology, Children, Adolescents, Twins, Attention Deficit Disorders, Separation Anxiety, Depression (Psychology), Incidence, Gender Differences, Models, Genetics, Environmental Influences, Measurement Techniques
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Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
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