Measurement invariance and differential item functioning of the positive and negative affect schedule: a psychometric study in Ecuadorian young adults.

ABSTRACT: This study aimed to validate the two-factor structure of the Spanish version of the Positive and Negative Affect Schedule (PANAS) in a sample of Ecuadorian young adults, examining its reliability, construct validity, and measurement invariance across gender. A total of nine hundred and eighteen participants completed the PANAS, along with measures of personality traits and negative life events. Confirmatory factor analysis (CFA), measurement invariance testing, and Differential Item Functioning (DIF) analyses were conducted. The two-factor model showed excellent fit after removing the item Alerta ("Alert"), which exhibited poor loading likely due to contextual reinterpretation. Both Positive Affect (PA) and Negative Affect (NA) scales demonstrated strong internal consistency (α >0.89). Dis

SUBMITTER: Parra-Gaete C 

PROVIDER: S-EPMC12463610 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature