TY - JOUR
T1 - Genetic and Environmental Contributions to Self-Report Obsessive-Compulsive Symptoms in Dutch Adolescents at Ages 12, 14, and 16
AU - van Grootheest, D.S.
AU - Bartels, M.
AU - van Beijsterveldt, C.E.M.
AU - Cath, D.C.
AU - Beekman, A.T.F.
AU - Hudziak, J.J.
AU - Boomsma, D.I.
PY - 2008
Y1 - 2008
N2 - Objective: To determine the contributions of genetic and environmental influences to variation in self-report of obsessive-compulsive (OC) symptoms in a population-based twin sample of adolescent boys and girls. Method: Self-report ratings on the eight-item Youth Self-Report Obsessive-Compulsive Scale were collected in Dutch mono- and dizygotic twin pairs who participated at age 12 (N = 746 twin pairs), 14 (N = 963 pairs), or 16 years (N = 1,070 pairs). Structural equation modeling was used to break down the variation in liability to OC symptoms into genetic and environmental components. Results: At age 12, no difference in prevalence was found for OC symptoms in boys and girls. At ages 14 and 16, the prevalence was higher in girls. At all ages, genetic factors contributed significantly to variation on OC symptom liability; 27% at the age of 12, 57% at the age of 14, and 54% at the age of 16. There were no sex differences in heritability. Only at age 12, environmental factors shared by children from the same family contributed significantly (16%) to individual differences in OC symptom scores. Conclusions: During adolescence, OC symptoms are influenced by genetic and nonshared environmental factors. Sex differences in prevalence, but not heritability, emerge in adolescence. At age 12, shared environmental factors are of importance, but their influence disappears at later ages. This is in line with earlier research at age 12 that used parental ratings of OC symptoms. Thus, between-family factors play a significant role in explaining individual differences in OC symptoms at this age. ©2008 by the American Academy of Child and Adolescent Psychiatry.
AB - Objective: To determine the contributions of genetic and environmental influences to variation in self-report of obsessive-compulsive (OC) symptoms in a population-based twin sample of adolescent boys and girls. Method: Self-report ratings on the eight-item Youth Self-Report Obsessive-Compulsive Scale were collected in Dutch mono- and dizygotic twin pairs who participated at age 12 (N = 746 twin pairs), 14 (N = 963 pairs), or 16 years (N = 1,070 pairs). Structural equation modeling was used to break down the variation in liability to OC symptoms into genetic and environmental components. Results: At age 12, no difference in prevalence was found for OC symptoms in boys and girls. At ages 14 and 16, the prevalence was higher in girls. At all ages, genetic factors contributed significantly to variation on OC symptom liability; 27% at the age of 12, 57% at the age of 14, and 54% at the age of 16. There were no sex differences in heritability. Only at age 12, environmental factors shared by children from the same family contributed significantly (16%) to individual differences in OC symptom scores. Conclusions: During adolescence, OC symptoms are influenced by genetic and nonshared environmental factors. Sex differences in prevalence, but not heritability, emerge in adolescence. At age 12, shared environmental factors are of importance, but their influence disappears at later ages. This is in line with earlier research at age 12 that used parental ratings of OC symptoms. Thus, between-family factors play a significant role in explaining individual differences in OC symptoms at this age. ©2008 by the American Academy of Child and Adolescent Psychiatry.
U2 - https://doi.org/10.1097/CHI.0b013e3181825abd
DO - https://doi.org/10.1097/CHI.0b013e3181825abd
M3 - Article
C2 - 18698267
SN - 0890-8567
VL - 47
SP - 1182
EP - 1188
JO - Journal of the American Academy of Child and Adolescent Psychiatry
JF - Journal of the American Academy of Child and Adolescent Psychiatry
IS - 10
ER -