NDLI: Alternative Factor Models and Heritability of the Short Leyton Obsessional Inventory

Content Provider	Springer Nature Link
Author	Moore, Janette Smith, Gillian W. Shevlin, Mark O’Neill, Francis A.
Copyright Year	2010
Abstract	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.
Starting Page	921
Ending Page	934
Page Count	14
File Format	PDF
ISSN	00910627
Journal	Journal of Abnormal Child Psychology
Volume Number	38
Issue Number	7
e-ISSN	15732835
Language	English
Publisher	Springer US
Publisher Date	2010-04-08
Publisher Place	Boston
Access Restriction	Subscribed
Subject Keyword	Obsessive-compulsive Confirmatory factor analysis Heritability Adolescents Twins Child and School Psychology
Content Type	Text
Resource Type	Article
Subject	Developmental and Educational Psychology Psychiatry and Mental Health

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