The study of Positive and Negative Affect in children and adolescents: New advances in a Spanish version of the PANAS.

The study of affective disorders among young population has become increasingly relevant in the last years. The PANAS is a widely used questionnaire devoted to assess positive and negative affect. The main purpose of the current study was to examine the psychometric properties of the Spanish version of the PANAS for children (PANAS). The sample consisted of 1032 children and adolescents aged between 10 and 15 years. The ESEM two factor model (Positive Affect and Negative Affect) was found as the most suitable model. The PANAS scores also showed acceptable internal consistency. The ESEM two factor model was invariant across gender and educational level. Results showed statistically significant differences in the latent mean scores with females scoring higher than males in and younger students scoring lower in PA. Positive and negative affect were related with external variables of well-being. The present psychometric study supports the PANAS as a brief and useful tool for the screening of PA and NA in children and adolescents.