The potential for faking on the Mississippi Scale for Combat-Related PTSD

Research output: Contribution to journalArticle


The Mississippi Scale for Combat-Related PTSD is widely used in the assessment of post-traumatic stress disorder (PTSD). The high face-validity of the scale may make it vulnerable to faking however. The present study found that the scores of individuals instructed to respond 'as if' they had PTSD did not differ from the scores of veterans with PTSD. Furthermore, although veterans who were diagnosed as having PTSD were found to have significantly higher Mississippi Scale scores than those who did not meet diagnostic criteria for PTSD, the mean score for all groups (veteran and non-veteran) exceeded the originally recommended diagnostic cut-off score of 107. A cut-off score of 121 was found to best differentiate veterans with PTSD from veterans who did not meet diagnostic criteria for the diagnosis, with high sensitivity but relatively low specificity.


  • J.A. Lyons
  • J.M. Caddell
  • R.L. Pittman
  • R. Rawls
  • S. Perrin
External organisations
  • Columbia University
Research areas and keywords


  • fabricated symptoms, malingering, Mississippi scale, PTSD assessment, adult, article, controlled study, human, major clinical study, male, posttraumatic stress disorder, rating scale, war
Original languageEnglish
Pages (from-to)441-445
Number of pages5
JournalJournal of Traumatic Stress
Issue number3
Publication statusPublished - 1994 Nov 10
Publication categoryResearch
Externally publishedYes

Total downloads

No data available