Psychometric properties of the emotional processing scale in individuals with psychiatric symptoms and the development of a brief 15-item version
Abstract
The 25-item Emotional Processing Scale (EPS) can be used with clinical populations, but there is little research on its psychometric properties (factor structure, test-retest reliability, and validity) in individuals with psychiatric symptoms. We administered the EPS-25 to a large sample of people (N = 512) with elevated psychiatric symptoms. We used confirmatory factor analysis to evaluate three a priori models from previous research and then evaluated discriminant and convergent validity against measures of alexithymia (Toronto Alexithymia Scale-20), depressive symptoms (Patient Health Questionaire-9), and anxiety symptoms (Generalized Anxiety Disorder-7). None of the a priori models achieved acceptable fit, and subsequent exploratory factor analysis did not yield a clear factor solution for the 25 items. A 5-factor model did, however, achieve acceptable fit when we retained only 15 items, and this solution was replicated in a validation sample. Convergent and discriminant validity for this revised version, the EPS-15, was r = − 0.19 to 0.46 vs. TAS-20, r = 0.07− 0.25 vs. PHQ-9, and r = 0.29− 0.57 vs. GAD-7. Test-retest reliability was acceptable (ICC = 0.73). This study strengthens the case for the reliability and validity of the 5-factor structure of the EPS but suggest that only 15 items should be retained. Future studies should further examine the reliability and validity of the EPS-15.
- Publication:
-
Scientific Reports
- Pub Date:
- June 2022
- DOI:
- 10.1038/s41598-022-14712-x
- Bibcode:
- 2022NatSR..1210456M