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Recent adolescent MMPI norms: T-score elevation comparisons to Marks and Briggs
D Klinefelter1, D L Pancoast, R P Archer
1Old Dominion University, Richmond, VA.
Journal of Personality Assessment
|January 1, 1990
Summary
The choice of Minnesota Multiphasic Personality Inventory (MMPI) adolescent norms impacts profile elevations but not diagnostic accuracy. Different MMPI adolescent norm sets yield comparable results in distinguishing between outpatient, inpatient, and normal adolescent groups.
Area of Science:
- Psychological Assessment
- Clinical Psychology
- Psychometrics
Background:
- The Minnesota Multiphasic Personality Inventory (MMPI) is a widely used psychological assessment tool.
- Standard adolescent norms for the MMPI have been established, but newer sets are now available.
- Selecting appropriate norms is crucial for accurate interpretation of MMPI results in adolescents.
Purpose of the Study:
- To compare the effects of different Minnesota Multiphasic Personality Inventory (MMPI) adolescent norm sets on scale and profile elevations.
- To evaluate the discriminative ability of various MMPI adolescent norm sets across different clinical settings.
- To inform clinicians about the impact of norm selection on adolescent MMPI interpretation.
Main Methods:
- Analysis of Minnesota Multiphasic Personality Inventory (MMPI) data from outpatient, inpatient, and normal adolescent samples (n=100 each).
- Comparison of single-scale and profile elevations across three distinct adolescent norm sets.
- Application of discriminant function analyses to assess classification accuracy using different norm sets.
Main Results:
- Significant differences in Minnesota Multiphasic Personality Inventory (MMPI) profile elevations were observed depending on the chosen adolescent norm set.
- Discriminant function analyses revealed that the examined adolescent norm sets demonstrated comparable effectiveness in differentiating between outpatient, inpatient, and normal adolescent groups.
- T-score values generated by the different norm sets showed similar utility for diagnostic discrimination.
Conclusions:
- While the selection of Minnesota Multiphasic Personality Inventory (MMPI) adolescent norms influences profile interpretation, their impact on diagnostic accuracy appears minimal.
- Clinicians should be aware that different norm sets can lead to variations in MMPI profile elevations.
- The available adolescent norm sets for the MMPI are largely equivalent in their ability to distinguish between clinical and non-clinical adolescent populations.