BACKGROUND: The phenotypic stability of @entity1314 ( @entity1314 ) and @entity3119 ( @entity3119 ) has previously been found to be moderate. However, little is known about the longitudinal structure of genetic and environmental factors for these disorders separately and jointly, and to what extent genetic and environmental factors contribute to their stability. METHOD: @entity1314 and @entity3119 criteria were assessed using the Structured Interview for DSM-IV Personality in 2793 young adult twins (1385 pairs, 23 singletons) from the Norwegian Institute of Public Health Twin Panel at @entity13830 and 2282 (986 pairs, 310 singletons) of these on average 10 years later at @entity13831 . Longitudinal biometric models were fitted to @entity1314 and @entity3119 traits. RESULTS: For twins who participated at both time-points, the number of endorsed sub-threshold criteria for both @entity1314 ( @entity1314 ) decreased 31% from @entity13830 to @entity13831 . Phenotypic correlations between waves were 0.54 and 0.37 for @entity1314 and @entity3119 , respectively. The heritability estimates of the stable PD liabilities were 0.67 for @entity1314 and 0.53 for @entity3119 . The genetic correlations were 1.00 for @entity1314 and 0.72 for @entity3119 , while the unique environmental influences correlated 0.26 and 0.23, respectively. The correlation between the stable @entity1314 and @entity3119 liabilities was 0.39 of which 63% was attributable to genetic influences. Shared environmental factors did not significantly contribute to PD variance at either waves 1 or 2. CONCLUSION: Phenotypic stability was moderate for @entity1314 and @entity3119 traits, and genetic factors contributed more than unique environmental factors to the stability both within and across phenotypes.

A longitudinal, population-based twin study of avoidant and XXXX traits from early to middle adulthood.

@entity1314 :: ('MESH:D010554', 'Disease') :: ['PDs', 'personality disorders', 'AVPD', 'avoidant personality disorder'] @entity3119 :: ('MESH:D009771', 'Disease') :: ['OCPD', 'obsessive-compulsive personality disorder'] @entity13830 :: ('8936', 'Gene') :: ['wave 1'] @entity13831 :: ('10163', 'Gene') :: ['wave 2']
@entity3119 :: (MESH:D009771,Disease) :: ['obsessive-compulsive personality disorder']
