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Substance user MMPI-2 profiles: predicting failure in completing treatment
1Chemical Dependency Studies, Mankato State University, Minnesota 56002, USA.
Substance Use & Misuse
|January 1, 1996
Summary
This study used the Minnesota Multiphasic Personality Inventory-2 (MMPI-2) to predict treatment completion in chemically dependent patients. Neurotic patients and those with elevated scores on Scales 7 and 8 were more likely to not complete treatment.
Area of Science:
- Psychology
- Addiction Medicine
- Clinical Psychology
Background:
- Identifying patients likely to discontinue substance abuse treatment is crucial for optimizing resource allocation and patient outcomes.
- The Minnesota Multiphasic Personality Inventory-2 (MMPI-2) is a widely used psychometric tool for assessing personality characteristics.
Purpose of the Study:
- To develop a predictive model using MMPI-2 data to identify chemically dependent patients at high risk of treatment noncompletion.
- To investigate the relationship between specific MMPI-2 profile types and treatment outcome in a chemically dependent population.
Main Methods:
- Analysis of MMPI-2 profiles from 173 chemically dependent patients (142 male).
- Utilized profile code types and multiple analysis of variance (MANOVA) for data analysis.
- Chi-square tests were employed to assess categorical relationships.
Main Results:
- Patients classified as neurotic demonstrated a higher likelihood of treatment failure (chi-square analysis).
- Elevated T-scores on MMPI-2 Scales 7 (Psychasthenia) and 8 (Schizophrenia) were significantly associated with treatment noncompletion (MANOVA, p < .05).
Conclusions:
- Specific MMPI-2 characteristics, particularly neuroticism and elevated scores on Scales 7 and 8, can indicate a higher risk of treatment noncompletion.
- The findings suggest that while MMPI-2 provides valuable insights, relying on a single objective measure may be insufficient for comprehensive outcome prediction in addiction treatment.