Neuroticism Increases PTSD Symptom Severity by Amplifying the Emotionality, Rehearsal, and Centrality of Trauma Memories.

Published

Journal Article

OBJECTIVE:Although it is well established that neuroticism increases the risk of posttraumatic stress disorder (PTSD), little is known about the mechanisms that promote PTSD in individuals with elevated levels of neuroticism. Across two studies, we examined the cognitive-affective processes through which neuroticism leads to greater PTSD symptom severity. METHOD:Community-dwelling adults with trauma histories varying widely in severity (Study 1) and clinically diagnosed individuals exposed to DSM-IV-TR A1 criterion traumas (Study 2) completed measures of neuroticism, negative affectivity, trauma memory characteristics, and PTSD symptom severity. RESULTS:Longitudinal data in Study 1 showed that individuals with higher scores on two measures of neuroticism assessed approximately three decades apart in young adulthood and midlife reported trauma memories accompanied by more intense physiological reactions, more frequent involuntary rehearsal, and greater perceived centrality to identity in older adulthood. These properties of trauma memories were in turn associated with more severe PTSD symptoms. Study 2 replicated these findings using cross-sectional data from individuals with severe trauma histories and three additional measures of neuroticism. CONCLUSIONS:Results suggest that neuroticism leads to PTSD symptoms by magnifying the emotionality, availability, and centrality of trauma memories as proposed in mnemonic models of PTSD.

Full Text

Duke Authors

Cited Authors

  • Ogle, CM; Siegler, IC; Beckham, JC; Rubin, DC

Published Date

  • October 2017

Published In

Volume / Issue

  • 85 / 5

Start / End Page

  • 702 - 715

PubMed ID

  • 27517170

Pubmed Central ID

  • 27517170

Electronic International Standard Serial Number (EISSN)

  • 1467-6494

International Standard Serial Number (ISSN)

  • 0022-3506

Digital Object Identifier (DOI)

  • 10.1111/jopy.12278

Language

  • eng