Normal range MMPI-A profiles among psychiatric inpatients

Area of Science:

• Psychological assessment
• Adolescent psychology
• Clinical psychology

Background:

• The Minnesota Multiphasic Personality Inventory-Adolescent (MMPI-A) is a widely used tool for assessing adolescent psychopathology.
• Understanding the prevalence and implications of normal-range MMPI-A profiles is crucial for accurate clinical interpretation.

Purpose of the Study:

• To determine the base rates of normal-range MMPI-A profiles in an inpatient adolescent sample.
• To compare adolescents with normal-range profiles to those with elevated profiles regarding history, symptoms, and validity indicators.

Main Methods:

• Analysis of MMPI-A profiles from an inpatient adolescent sample.
• Comparison of demographic, clinical history, symptom reporting (internalizing and externalizing), and MMPI-A validity scale scores between normal-range and elevated profile groups.

Main Results:

• Approximately 30% of males and 25% of females exhibited normal-range MMPI-A profiles (all clinical T-scores < 60).
• Adolescents with normal profiles reported fewer internalizing symptoms but similar externalizing symptoms compared to those with elevated profiles.
• Standard and additional MMPI-A validity scales did not effectively differentiate between normal-range and elevated profile groups.

Conclusions:

• Normal-range MMPI-A profiles in adolescents do not necessarily reflect a less pathological history or defensiveness.
• Clinicians should not interpret normal-range MMPI-A profiles as indicative of an absence of psychological problems.
• Further research is needed to understand the clinical significance of normal-range MMPI-A profiles in diverse adolescent populations.