Dimensional representations of DSM-IV Cluster A personality disorders in a population-based sample of Norwegian twins: a multivariate study

@article{Kendler2006DimensionalRO,
  title={Dimensional representations of DSM-IV Cluster A personality disorders in a population-based sample of Norwegian twins: a multivariate study},
  author={Kenneth S. Kendler and Nikolai O Czajkowski and Kristian Tambs and Svenn Torgersen and Steven H. Aggen and Michael C. Neale and Ted Reichborn-Kjennerud},
  journal={Psychological Medicine},
  year={2006},
  volume={36},
  pages={1583 - 1591}
}
Background. The ‘odd’ or ‘Cluster A’ personality disorders (PDs) – paranoid, schizoid and schizotypal PDs – were created in DSM-III with little empirical foundation. We have examined the relationship between the genetic and environmental risk factors for dimensional representations of these three personality disorders. Method. These personality disorders were assessed using the Structured Interview for DSM-IV Personality (SIDP-IV) in 1386 young adult twin pairs from the Norwegian Institute of… Expand
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Etiologically, cluster B has a ‘substructure’ in which ASPD and BPD are more closely related to each other than to the other cluster B disorders. Expand
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The relationship between genetic and environmental influences on personality assessed by NPTs, APTs, and PDs is complex and does not fit easily into a low or high congruence model. Expand
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The latent liabilities to the cluster A PDs are highly heritable but are assessed by current methods with only moderate reliability, while the personal interviews assessed the genetic risk for the latent trait with excellent specificity for PPD and STPD and good specificity for SPD. Expand
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