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Am J Psychiatry. 1995 Jun;152(6):936-8.

Association of intelligence with severity of posttraumatic stress disorder symptoms in Vietnam Combat veterans.

Author information

  • 1Department of Psychology, Harvard University, Cambridge, MA 02138, USA.

Abstract

OBJECTIVE:

The purpose of this study was to determine whether intelligence predicts variance in posttraumatic stress disorder (PTSD) symptoms beyond that predicted by extent of combat exposure.

METHOD:

The subjects were 105 male Vietnam combat veterans. They completed the Mississippi Scale for Combat-Related Posttraumatic Stress Disorder, the Combat Exposure Scale, and the Shipley Institute for Living Scale, a measure of general intelligence. Number of years of education was recorded for each subject.

RESULTS:

Multiple regression analyses revealed that estimated full-scale IQ significantly predicted variance in PTSD symptoms beyond that predicted by extent of combat exposure. The lower a subject's intelligence, the more severe were his PTSD symptoms.

CONCLUSIONS:

Cognitive variables may affect the ability to cope with trauma, thereby affecting whether a person develops chronic PTSD.

PMID:
7755129
[PubMed - indexed for MEDLINE]
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