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Acta Colombiana de Psicología
versión impresa ISSN 0123-9155
Resumen
CALLEJA, Nazira; MASON, Tere A. y PEREZ, Olimpia Gómez. Subjective Well-Being Scale, short version (EBS-8): Revalidation, measurement invariance and Item Response Theory. Act.Colom.Psicol. [online]. 2022, vol.25, n.1, pp.203-217. Epub 21-Mar-2022. ISSN 0123-9155. https://doi.org/10.14718/acp.2022.25.1.13.
The Subjective Well-Being Scale (EBS-20) and its short version (EBS-8) were developed and validated to measure life satisfaction and positive affect in a Spanish-speaking population. The aim of the present study was to obtain additional evidence of validity for the EBS-8. To this end, the scale was applied in three successive studies to a total of 2259 Mexicans aged 12 to 81 years. The results of the first study allowed us to confirm its unifactorial structure (CMIN/DF = 2.336; CFI = .996; RMSEA = .047) and its adequate reliability (a = .958, co = .957); in the second its measurement invariance by sex, social group and age was tested (A%2 p >. 05, ACFI < .004, ARMSEA < .014); and in the third study it was found, by calibrating its items under IRT, that the scale satisfactorily estimates the construct assessed (a > 1.69; b1 between -2.78 and -2.35). From the psychometric indices obtained, it is concluded that the EBS-8 is an excellent brief instrument constructed in Spanish to assess subjective well-being in adolescents, young people, adults and older adults.
Palabras clave : subjective well-being; validation; psychometric analysis; factorial invariance; item response theory.