ERIC Number: EJ899706
Record Type: Journal
Publication Date: 2010-Oct
Abstractor: As Provided
Reference Count: 82
Alternative Factor Models and Heritability of the Short Leyton Obsessional Inventory--Children's Version
Moore, Janette; Smith, Gillian W.; Shevlin, Mark; O'Neill, Francis A.
Journal of Abnormal Child Psychology, v38 n7 p921-934 Oct 2010
An alternative models framework was used to test three confirmatory factor analytic models for the Short Leyton Obsessional Inventory-Children's Version (Short LOI-CV) in a general population sample of 517 young adolescent twins (11-16 years). A one-factor model as implicit in current classification systems of Obsessive-Compulsive Disorder (OCD), a two-factor obsessions and compulsions model, and a multidimensional model corresponding to the three proposed subscales of the Short LOI-CV (labelled Obsessions/Incompleteness, Numbers/Luck and Cleanliness) were considered. The three-factor model was the only model to provide an adequate explanation of the data. Twin analyses suggested significant quantitative sex differences in heritability for both the Obsessions/Incompleteness and Numbers/Luck dimensions with these being significantly heritable in males only (heritability of 60% and 65% respectively). The correlation between the additive genetic effects for these two dimensions in males was 0.95 suggesting they largely share the same genetic risk factors.
Descriptors: Factor Analysis, Models, Measures (Individuals), Adolescents, Twins, Anxiety Disorders, Genetics, Gender Differences
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
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