Psychometric analysis of the UPPS-P impulsivity scale for children and adolescents using the Rasch polytomous model. Análisis psicométricos de la escala de impulsividad UPPS-P para niños y adolescentes mediante el modelo politómico de Rasch

GARRIDO, SEBASTIAN JESÚS; GHIO, FERNANDA BELÉN; CUPANI, MARCOS; BRUZONE, MANUEL

Revista de Psicologia (Peru)

Pontificia Universidad Catolica del Peru

Año: 2023 vol. 42 p. 1153 - 1184

0254-9247

The UPPS-P scale is widely used to assess impulsivity. For this reason, the psychometric properties of the extensive version of UPPS-P were analyzed from the Rasch polytomous model. Eight hundred Argentine adolescents aged 12 to 18 years participated in the study. As a result, it was found that the dimensions of the UPPS-P presented an adequate fit to the Rasch model, adequate levels in the Person Separation Index (PSI), some items with local dependence and an adequate level of unidimensionality. It is concluded that the scale is a valid instrument to assess impulsivity in adolescents; therefore, a conversion table with interval scores is presented to increase the measurement precision of the instrument.