PSYCHOMETRIC PROPERTIES OF THE BRAZILIAN VERSION OF THE SPORT IMAGERY ABILITY QUESTIONNAIRE

Abstract

Alberto Filgueiras, Rodrigo Pieri, Andréa Pesca, Juliana Camilo, Gislane Melo, Bruno de Oliveira Galvão, Erick Francisco Quintas Conde, J. Landeira-Fernandez

The ability to conduct imagery is linked to a set of psychological factors in sport practices. This paper investigated the psychometric properties of the Brazilian-adapted version of the Sport Imagery Ability Questionnaire. Amateur athletes from four sports: football, basketball, volleyball and karate, participated (N=383). Data from the back-translated version of the instrument was collected with another Imagery measurement. After a randomized division of the sample, exploratory and confirmatory-factor analyses were performed. Results suggest a 5-factor structure confirmed by fit indexes: CFI=0.97; TLI=0.96; RMSEA=0.05. Reliability was examined by Cronbach’s alpha and composite reliability that showed values above .70. Testretest was also used (r=0.89). Convergent validity was moderate (r=0.51). Criterion validity was tested through two MANOVA where the dependent variable was the average of each one of the 5 factors. The first MANOVA considered sex as independent variable and yielded non-significant results (p=0.45) with a small effect-size (η2=0.04). The second MANOVA was conducted for types of sport as independent variables with significant results (p<0.05) and moderate effect-size (η2=0.27). Results pointed out to validity and reliability comparable to the original version that entails that the Brazilian-adapted questionnaire kept its statistical characteristics.