MMPI--2 Code-Type Congruence of Injured Workers

Psychol Assess. 2006 Mar;18(1):126-30. doi: 10.1037/1040-3590.18.1.126.


In this study, the authors examined the stability of Minnesota Multiphasic Personality Inventory--2 (J. N. Butcher, W. G. Dahlstrom, J. R. Graham, A. Tellegen, & B. Kaemmer, 1989) code types in a sample of 94 injured workers with a mean test-retest interval of 21.3 months (SD = 14.1). Congruence rates for undefined code types were 34% for high-point codes, 22% for 2-point codes, and 22% for 3-point codes. The data provide tentative evidence suggesting that defined code types are more stable than undefined code types. Cohen's kappa, a statistic that controls for chance agreement, was calculated for each clinical scale for both 2-point and 3-point code types. Only 2 of the 20 kappa coefficients were not significant at the p = .05 level.

MeSH terms

  • Accidents, Occupational / psychology*
  • Adult
  • Employment*
  • Female
  • Humans
  • MMPI*
  • Male
  • Personality Disorders / diagnosis*
  • Personality Disorders / psychology*