MMPI and MMPI-2 profile and code type congruence in a brain-injured sample

Abstract

Examined the comparability of the Minnesota Multiphasic Personality Inventory (MMPI) and Minnesota Multiphasic Personality Inventory-2 (MMPI-2) in a sample of brain-injured patients. There were 53 patients (36 males, 17 females; M age = 27.25, SD = 11.45), the majority of whom had suffered a closed-head injury. The MMPI-2 and MMPI items were administered in the context of an extensive neuropsychological examination. Results revealed a lack of congruence between the MMPI and MMPI-2 when the entire profile was compared using profile analysis. Analyses of code types found congruence to be high for single point elevations but modest for 2-point code types. The degree of congruence appears related to the nature of analysis, and for clinical purposes, code-type interpretation may be most relevant. These results provide some support for the congruence of the MMPI and MMPI-2 for brain-injured patients, but particular caution should be exercised in the interpretation of 2-point code types.

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