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Addiction severity and MMPI-derived typologies in cocaine abusers
S A Ball1, K M Carroll, J E Robinson
1Department of Psychiatry, Yale University School of Medicine, New Haven, CT 06519, USA.
The American Journal on Addictions
|January 1, 1997
Summary
Researchers identified two distinct personality subtypes in cocaine abusers: psychopathic and severe psychiatric. These subtypes were validated in an outpatient setting, confirming differences in psychiatric severity.
Area of Science:
- Psychiatry
- Psychology
- Addiction Medicine
Background:
- Previous research identified two Minnesota Multiphasic Personality Inventory (MMPI) subtypes in male inpatient cocaine abusers: psychopathic and severe psychiatric.
- Replication of these subtypes in diverse populations is crucial for understanding cocaine use disorder heterogeneity.
Purpose of the Study:
- To replicate the previously identified MMPI psychopathic and severe psychiatric subtypes in an outpatient sample.
- To validate these subtypes using the Addiction Severity Index (ASI) and assess psychiatric severity differences.
Main Methods:
- The study included 132 outpatients (men and women) with cocaine use disorder.
- Participants were assessed using the Minnesota Multiphasic Personality Inventory (MMPI) and the Addiction Severity Index (ASI).
Main Results:
- The two MMPI subtypes (psychopathic and severe psychiatric) were successfully replicated in the outpatient sample.
- The Addiction Severity Index (ASI) confirmed significant differences in psychiatric severity between the two subtypes.
Conclusions:
- The findings support the existence of distinct psychopathic and severe psychiatric subtypes in individuals with cocaine use disorder, extending beyond inpatient males.
- These validated subtypes have implications for tailoring treatment interventions based on individual psychiatric severity.