Cuevas Esteban, LaraGarcía, Luis F.Aluja, AntónGarcía, Óscar2026-02-092026-02-092008-06Cuevas, L., García, L. F., Aluja, A., & García, Ó. (2008). Exploratory and confirmatory factorial structure of the MCMI-III Personality Disorders: Overlapping versus non-overlapping scales. The European Journal of Psychiatry, 22(2). https://doi.org/10.4321/S0213-616320080002000010213-616310.4321/S0213-61632008000200001https://hdl.handle.net/20.500.14352/131892Background and Objectives: The aim of this study was to explore the factorial structure of the 14 Personality Disorder (PD's) scales of the MCMI-III for the overlapping and non-overlapping scales, independently. Previous exploratory studies using different factor extraction procedures inform that the structure of MCMI-III personality disorders has between 2 and 4 factors. Methods: The present study used a large sample of 674 non-clinical subjects divided at random in two groups: a) calibration, and b) validation. In the calibration group, principal component analysis with orthogonal rotation was carried out, obtaining 2, 3 and 4 factors for the overlapping and non-overlapping scales independently. In the validation group, the three models were compared using confirmatory factorial analysis techniques. Results and Conclusions: The exploratory and confirmatory results indicate that the 4-factor solution is the most plausible. Although the congruence coefficients between non-overlapping and overlapping scales in the 4-factor solution were higher, confirmatory factor analysis showed that models designed from overlapping scales did not fit well to data.engAttribution-NonCommercial 4.0 Internationalhttp://creativecommons.org/licenses/by-nc/4.0/journal articlehttps://doi.org/10.4321/S0213-61632008000200001https://scielo.isciii.es/scielo.php?script=sci_arttext&pid=S0213-61632008000200001&lng=en&nrm=iso&tlng=enopen accessMCMI-IIIExploratory and confirmatory factorial analysisPersonality disordersPersonalidadPsicometría61 Psicología