The Validity and Reliability of the Turkısh Form of the Dieting Self-Efficiency Scale

Abstract

The validity and reliability the Dieting Self-Efficiency Scale (DIET-SE) in Turkish as aimed. The study, using a methodological research design, was carried out with 475 participants at Uskudar University in the 2021-2022 academic year. Sociodemoghrafic questions, the Dieting Self-Efficiency Scale and the General Self-Efficacy (GSE) Scale were applied through a structured questionnaire created in Google Forms. In the statistical analyses, internal consistency coefficient, factor analyzes and correlations were made with IBM SPSS26® software. In the pilot study of DÖYÖ conducted with 146 participants, Cronbach's Alpha value was 0.787, and it was determined that the scale had highly reliability and suitable for validity analysis without removing any items. In Explanatory Factor Analysis of main study, Kaiser-Mayer-Olkin value was 0.907, sample size was super level sufficient, and Bartlett Sphericity Test was statistically significant at the level of χ2=1107.066 and p=0.000. Consequently, a 3-factor structure was revealed with factor loads >0.20 and eigenvalues >1, explaining 67.44% of total variance. In the Confirmatory Factor Analysis of study, the goodness of fit indices of 11-item version were RMSEA=0.022; CFI=0.997; GFI=0.992; NFI=0.981; SRMR=0.054; AGFI=0.987; χ2/df=1.126 so it was determined that showed sufficient fit. In the internal consistency analysis, Cronbach's Alpha coefficient was found to be 0.900. The Turkish version of the Dieting Self-Efficiency Scale which can be used to measure dieting self-efficiency, has been shown to be valid and reliable in Turkish population.