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P-941 - Factor Structure of the Mcmi-iii in a Psychiatric Patients Sample

Published online by Cambridge University Press:  15 April 2020

M. Salinas ,
E. Santana ,
J. Chico ,
V. Barrau ,
S. Yelmo ,
N. Gallego ,
S. Poyo  and
R. Gracia
M. Salinas
Affiliation:
University Hospital of the Canary Islands, La Laguna, Spain University of La Laguna, La Laguna, Spain
E. Santana
Affiliation:
University Hospital of the Canary Islands, La Laguna, Spain University of La Laguna, La Laguna, Spain
J. Chico
Affiliation:
University Hospital of the Canary Islands, La Laguna, Spain University of La Laguna, La Laguna, Spain
V. Barrau
Affiliation:
University Hospital of the Canary Islands, La Laguna, Spain University of La Laguna, La Laguna, Spain
S. Yelmo
Affiliation:
University Hospital of the Canary Islands, La Laguna, Spain University of La Laguna, La Laguna, Spain
N. Gallego
Affiliation:
University Hospital of the Canary Islands, La Laguna, Spain University of La Laguna, La Laguna, Spain
S. Poyo
Affiliation:
University Hospital of the Canary Islands, La Laguna, Spain University of La Laguna, La Laguna, Spain
R. Gracia
Affiliation:
University Hospital of the Canary Islands, La Laguna, Spain University of La Laguna, La Laguna, Spain

Abstract

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Introduction

The convenience of a dimensional Axis II in the DSM-5 has been discussed, since there is criticism about the current categorical model, such as the high comorbidity or the scarce interrater agreement. Some think that those flaws could be attributed to the lack of an underlying theoretical model. To this respect, there are evidences that show that the personality disorders could be considered as extreme cases of normal personality traits. We try to find out if the factor analysis of a personality disorder scale (MCMI-III) reflects normal personality factors.

Method

Participants and procedure: we analyzed the MCMI-III (Millon, 1998) profiles of 50 Personality Disorders patients and 50 controls. Principal Components Factor Analyses with varimax rotation were computed globally and separately for each sample.

Results

A three factor structure (paranoid introversion, self control and insecurity) was found when analyzing both samples together. The separated samples analysis showed the same structure in controls, while in patients we found a three factor structure: neurotic introversion, hostility and self control. Both structures were basically equivalent, and differences among them could be qualified by a test bias (namely, higher averages for patients in the anxious and psychotic-like disorders).

Conclusions

Factor structures did not reflect the DSM-IV cluster division, and neither did it reflect Millon's classification. Conversely, the factors we found were consistent with personality traits previously described by normal personality models (e.g.: Cattell, 1957; Costa y McCrae, 1990; Eysenck, 1981).

Type
Abstract
Information
European Psychiatry , Volume 27 , Issue S1: Abstracts of the 20th European Congress of Psychiatry , 2012 , pp. 1
Copyright
Copyright © European Psychiatric Association 2012
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