Article
The heritability of gender identity disorder in a child and adolescent twin sample.
Behavior genetics - 1 Jul 2002
Coolidge Frederick L, Thede Linda L, Young Susan E
Abstract excerpt
The heritability and prevalence of the gender identity disorder (GID) was examined, as well as its comorbidity with separation anxiety and depression, in a nonretrospective study of child and adolescent twins. The parents of 314 twins (ages 4-17 years; 96 monozygotic pairs [MZ] and 61 dizygotic [DZ] pairs) completed the Coolidge Personality and Neuropsychological Inventory (CPNI) containing a six-item...
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