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- Title
Test of alternative hypotheses explaining the comorbidity between attention-deficit/hyperactivity disorder and conduct disorder.
- Authors
Rhee, Soo; Willcutt, Erik; Hartman, Christie; Pennington, Bruce; DeFries, John; Rhee, Soo Hyun; Willcutt, Erik G; Hartman, Christie A; Pennington, Bruce F; DeFries, John C
- Abstract
There is significant comorbidity between attention-deficit/hyperactivity disorder (ADHD) and conduct disorder (CD). The conclusions of studies that examined the causes of comorbidity between ADHD and CD conflict, with some researchers finding support for the three independent disorders model and others finding support for the correlated risk factors model. We tested these models and eleven alternative hypotheses using the same analytical approach. The participants were 110 monozygotic twin pairs and 181 dizygotic twin pairs recruited from the Colorado Learning Disabilities Research Center Twin Study. The three independent disorders model did not fit the data, whereas the correlated risk factors model fit the data well. Several other comorbidity models fit the data as well as or better than the correlated risk factors model. The results suggest that correlated risk factors are a better explanation for the comorbidity between ADHD and CD than a third, independent ADHD+CD subtype.
- Subjects
COMORBIDITY; ATTENTION-deficit hyperactivity disorder; CONDUCT disorders in children; TWINS; BEHAVIOR disorders in children; STATISTICAL correlation; CHILD psychology; BEHAVIOR genetics; CHILD psychiatry; DIAGNOSIS of learning disabilities; ATTRIBUTION (Social psychology); COMPARATIVE studies; CHILD psychopathology; DISEASE susceptibility; LEARNING disabilities; RESEARCH methodology; MEDICAL cooperation; PERSONALITY assessment; RESEARCH; RESEARCH funding; SOCIOMETRY; TWIN psychology; EVALUATION research; SOCIAL context; SYMPTOMS; STATISTICAL models; DIAGNOSIS; PSYCHOLOGY
- Publication
Journal of Abnormal Child Psychology, 2008, Vol 36, Issue 1, p29
- ISSN
0091-0627
- Publication type
journal article
- DOI
10.1007/s10802-007-9157-9