Psychometric performance of the ultra-short version of the post-traumatic growth inventory in Peruvian adults during the Post-Pandemic: Analysis from Item Response Theory and SEM models

Vilca Quiro, Lindsey Wildman; Huerta Estrada, Samy Luana; Barbaran Alvarado, Rose Wytske; Travezaño Cabrera, Aaron Italo; Quiroz Becerra, Julisa Margot; Calizaya Anahua, Maria; Rojas Mendoza, Estefany; Alania Marin, Vaneryn

doi:10.26495/bekfw864

Psychometric performance of the ultra-short version of the post-traumatic growth inventory in Peruvian adults during the Post-Pandemic: Analysis from Item Response Theory and SEM models

Author(s)

Vilca Quiro, Lindsey Wildman

Universidad Señor de Sipán

Huerta Estrada, Samy Luana

Barbaran Alvarado, Rose Wytske

Travezaño Cabrera, Aaron Italo

Universidad Peruana Unión

Quiroz Becerra, Julisa Margot

Universidad Peruana Unión

Calizaya Anahua, Maria

Rojas Mendoza, Estefany

Alania Marin, Vaneryn

Date Issued

20 de diciembre de 2025

Type

Article

Volume

1

Series/Report No.

Avances en Psicometría Iberoamericana

DOI

10.26495/bekfw864

ISSN

3119-7728

Abstract

Objective: This study aimed to study the psychometric functioning of the ultra-short version of the Posttraumatic Growth Inventory through the Item Response Theory (IRT) and evaluate the Differential Item Functioning (DIF). Method: 404 Peruvian adults of both sexes (65.8% women and 34.2% men) between 18 and 58 years (M = 24.3, SD = 7.9) participated. The Brief Resilient Coping Scale and the General Well-being Index (WHO-5) were also applied. Results: All the items present adequate discrimination and difficulty indices. Also, it was found that item 1 presents DIF between the group of men and women. On the other hand, it was found that resilience significantly predicts posttraumatic growth (.50; p < .01) and, in turn, posttraumatic growth significantly predicts psychological well-being (.40; p < .01). Conclusions: The ultra-short version shows adequate psychometric functioning and is, therefore, a helpful tool that allows obtaining valid and reliable interpretations of posttraumatic growth.