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J Psychopathol Behav Assess. 2009 Dec;31(4):358-367.

Comparison of Three Self-Report Measures of Personality Pathology.

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Washington University in St. Louis.


Levels of convergence among three measures of personality pathology, the Personality Diagnostic Questionnaire-4+ (PDQ-4+), the Structured Clinical Interview for DSM-IV Axis II Personality Disorders Questionnaire (SCID-IIQ) and the Multi-source Assessment of Personality Pathology (MAPP) were examined. Each questionnaire was administered three times in an alternating sequence over nine consecutive weekdays to a sample of college students. There was some degree of convergence among the three instruments, but there were also substantial empirical differences between them. The data suggest three related conclusions: (1) in general, the self-report version of the MAPP is more conservative than the other two questionnaires, (2) these questionnaires should not be considered interchangeable measures of the same constructs, and (3) the breadth of measurement provided varies as a function of both the questionnaire and the specific personality disorder being measured.

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