Scale of Positive and Negative Aff ects (EAPN-10): Evidence of its Psychometric Adequacy

Abstract

This study aimed to gather psychometric evidence of the Scale of Positive and Negative Aff ects (EAPN-10) within the Brazilian context. Three studies were performed (N = 911). Study 1 considered 296 undergraduate students (M Age = 23.8; 59.1% females), who answered the EAPN-10 and a demographic questionnaire. Exploratory factor analysis revealed a two-factor structure [positive aff ects ( = .82) and negative aff ects ( = .81)], explaining 59.7% of the total variance. Study 2 took into account the participation of 313 undergraduate students (M Age = 23.3; 57.2% females), who answered the same instruments. Confi rmatory factor analysis corroborated the two-factor structure (e.g., CFI = .92), which was invariant across males and females (e.g., CFI < .01), with alphas greater than .70. Finally, Study 3's participants were 302 university students (M Age = 23.1; 54.3% females), who answered the aforementioned instruments as well as measures of vitality, positivity, optimism, anxiety, depression and stress. Supporting their criterion validity, positive aff ects ( = .83) were positively correlated Trends Psychol., Ribeiro Preto, vol. 27, n 1, p. 189-203 -March/2019 with well-being indicators, and negative aff ects ( = .80) were positively correlated with indicators of psychological discomfort. In conclusion, the EAPN-10 is a psychometrically adequate measure that can be employed to assess people's aff ects and their correlates within the Brazilian context.