A multivariate twin study of obsessive-compulsive symptom dimensions.

  title={A multivariate twin study of obsessive-compulsive symptom dimensions.},
  author={Alessandra C. Iervolino and F. V. Rijsdijk and Lynn Cherkas and Miquel Angel Fullana and D Mataix-Cols},
  journal={Archives of general psychiatry},
  volume={68 6},
CONTEXT Obsessive-compulsive disorder (OCD) is clinically heterogeneous, but it is unclear whether this phenotypic heterogeneity reflects distinct, or partially distinct, etiologic mechanisms. OBJECTIVE To clarify the structure of the genetic and environmental risk factors for the major symptom dimensions of OCD. DESIGN Self-report questionnaires and multivariate twin model fitting. SETTING General community. PARTICIPANTS A total of 4355 female members of the TwinsUK adult twin register… CONTINUE READING


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