A classical twin study of PTSD symptoms and resilience: Evidence for a single spectrum of vulnerability to traumatic stress.

ABSTRACT:

Background

To examine shared genetic and environmental risk factors across PTSD symptoms and resilience.

Methods

Classical twin study of 2010-2012 survey data conducted among 3,318 male twin pairs in the Vietnam Era Twin Registry. Analyses included: (a) estimates of genetic and environmental influences on PTSD symptom severity (as measured by the PTSD Checklist) and resilience (assessed with the Connor-Davidson Resilience Scale-10); (b) development of a latent model of traumatic stress, spanning both PTSD and resilience; and (c) estimates of genetic and environmental influences on this spectrum.

Results

The heritability of PTSD was 49% and of resilience was 25%. PTSD and resilience were correlated at r = -.59, and 59% of this correlation was attributable to a single g

SUBMITTER: Wolf EJ 

PROVIDER: S-EPMC5794534 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature