ABSTRACT
In its original version, the MCMI-I consisted of II personality scales (Schizoid-Asocial, Avoidant, Dependent-Submissive, Histrionic-Gregarious, Narcissistic, Antisocial-Aggressive, Compulsive-Conforming, Passive-Aggressive-Negativistic, Schizotypal-Schizoid, Borderline-Cycloid, and Paranoid) and 9 clinical syndrome scales (Anxiety, Somatoform, Hypomanic, Dysthymia, Alcohol Abuse, Drug Abuse, Psychotic Thinking, Psychotic Depression, and Psychotic Delusions). When the DSM-lll was revised (DSM-llJ-R, APA, 1987), the MCMI-I was also revised, in part to account for additional personality disorders that were then added to the official diagnostic classification system. Thus the MCMI-IJ separated the Antisocial-Aggressive scale into two separate scales, Antisocial and Aggressive-Sadistic, and also added a Self-Defeating (Masochistic) Personality Disorder scale, bringing the number of personality disorder scales to 13, with no change in the number of clinical syndrome scales. When the DSM-IV (APA,
HISTORY OF THE TEST'S DEVELOPMENT
PSYCHOMETRIC CHARACTERISTICS
In constructing the MCMI-I (and the subsequent revisions), Millon used a three-stage validation process consisting of theoretical-substantive, internal-structural, and externalcriterion validation. In the first stage, test items are developed and then assessed according to the degree to which they fit the theory. In stage two, the items are assessed to see how well they interrelate, and the psychometric properties of the test are determined. In stage 3, the convergent and discriminative validity of the test is assessed by correlating the test with similar (or dissimilar) instruments.
