Abstract

ABAL, FACUNDO JUAN PABLO; LOZZIA, GABRIELA SUSANA  and  ATTORRESI, HORACIO FELIX. Psychometric properties of a Depression scale based on the Five Factor Model. Psicol. caribe [online]. 2021, vol.38, n.3, pp.300-322.  Epub May 24, 2022. ISSN 0123-417X.  https://doi.org/10.14482/psdc.38.3.157.37.

The process of constructing a scale to measure the Depression facet, according to the Five Factors Model, is presented. A review of the theoretical and operational definitions of relevant authors of this model was carried out. Then, 15 initial items were elaborated, 3 of which were eliminated by expert judges. The retained items were administered to 1222 adults of the general population residing in the Buenos Aires Metropolitan Area, Argentina (50.8% women, mean age = 33.2 years and SD = 11.8 years). A random selection of 35% of cases was made to reduce the instrument with an Exploratory Factor Analysis. The remaining 65% was used to corroborate the internal structure with a Confirmatory Factor Analysis, and to fit the Graded Response Model of the Item Response Theory. The results show that the 10 items of the final version form a one-dimensional structure with adequate internal consistency. Evidence of concurrent validity is provided with EPQ-RA and SCL-90-R. The Test Information Function reveals that the scale measures with constant high reliability over a wide range of the trait. It is concluded that the scale allows a satisfactory assessment of individual differences in the tendency to experience depressive effects.

Keywords : Depression; Five Factor Model; Big Five Model; Graded Response Model; Item Response Theory.

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