Purpose: Designed to provide treatment information in the areas of personality disorders and clinical syndromes.
Population: Adult clinical population 18 and over with 8th grade reading
Scales: 28 clinical personality scores Modified Indices (4), Clinical Personality Patterns (11), Severe Personality Pathology (3), Clinical Syndromes (7), and Severe Clinical Syndromes (3)
Time: approx. 25 minutes
Author: Theodore Millon, Roger Davis, and Carrie Millon
Publisher: NCS Pearson
Description: The Millon Clinical Multiaxial Inventory-3rd. Ed. (MCMI-III) is an update of the MCMI-II which represents ongoing research, conceptual developments, and the changes in the DSM-IV. It is a standardized, self-report questionnaire assessing a wide range of information related to personality, emotionality, and test-taking attitude. The MCMI-III contains 175 items which produce 28 scales. Changes to the MCMI-II include addition of the Depressive and PTSD scales. There are 90 new items and 85 that remained the same maintaining the 175 total items of the MCMI-II. Most of the changes had to do with the severity of the symptoms to increase the ability to detect pathology. The items per scale were reduced, keyings were reduced from 953 to 440, and the possible ratings per item reduced from 3 to 2 choices. The instrument is brief in comparison to other personality inventories, it has a strong theoretical basis, administration and scoring are simple, and it has a multi-axial format.
Scoring: The MMCI-III consists of 28 p\clinical personality scales, Modifying Indices (Disclosure, Desirability, Debasement, Validity), Clinical Personality Patterns (Schizoid, Avoidant, Depressive, Dependent, Histrionic, Narcissistic, Antisocial, Aggressive (Sadistic), Compulsive, Passive-Aggressive (Negativistic), Self-Defeating), Severe Personality Pathology (Schizotypal, Borderline, Paranoid), Clinical Syndromes (Anxiety, Somatoform, Bipolar: Manic, Dysthymia, Alcohol Dependence, Drug Dependence, Post-Traumatic Stress Disorder), Severe Clinical Syndromes (Thought Disorder, Major Depression, Delusional Disorder).
Reliability: For the MCMI-III the internal consistency measures have been strong. The alpha coefficients exceed .80 for 20 of the 26 scales. The Depression scale had a high of .90, and the Conpulsive scale was low at .66. Test-retest reliability , interval of 5 to 14 days, was equally high with a median of .91.
Validity: Factor analysis supports the organization of the scales. Many correlatiosn have been made between the MCMI-III and related instruments, for example, the Beck Depression Inventory correlated with the MCMI-III Major Depression (.74) and Dysthymia (.71). High correlations were also found between the MMPI-2 and the MCMI-III Major Depression (.71) and Dysthymia (.68). While there have been some surprising results, with moderate or low correlations, most of the findings have been in the expected direction.
Norms: The instrument was normed with psychiatric patients and uses a new weighted score, the Base Rate Score (BRS) that takes into account the prevalence of the specific disorder in the psychiatric population. The normative data and transformation scores are based entirely on clinical samples and are applicable only to individuals who evidence problematic emotional and interpersonal symptoms or who are undergoing professional psychotherapy or a psychodiagnostic evaluation.
Suggested use: MCMI-III is used primarily in clinical settings with individuals who require mental health services for emotional, social, or interpersonal difficulties. One reviewer states that he considers this test as one of the greatest contributions made to the field during his professional life.