Öz
The aim of this study is to investigate the psychometric properties of Two-Factor Weight Bias Internalization Scale (WBIS-2F) and to bring it to Turkish literature. Three different examples have been identified to achieve the purpose of the research. The first is a group of examples of individuals who have done 230 sports or exercises in total, where the descriptive factor analysis is done, the second is a group of examples of individuals who have done 267 sports or exercise, where additional analysis is done, and the third is a group of 30 sports or exercise people who have done test-retest. IBM SPSS Statistics 22 and Jamovi 2.3.7. were used in the analysis of the obtained data. The exploratory factor analysis determined that WBIS-2F has a two-factor structure, which is weight-related stress and weight-related self-devaluation. The two-factor structure of the scale describes 55.19% of the total variance. The Cronbach Alpha coefficient obtained to test reliability was found at a total of 0.80 of the scale, subscale of 0,89 of weight-related stress and subscale of 0,76 of weight-related self-devaluation. In addition, it has been determined that the scale has not changed in the test retest analysis results for reliability purposes. According to the results of the confirmatory factor analysis, index of fit the model is acceptable and within the perfect range. As a result, the findings from the study found that WBIS-2F is a measure that can be used to determine the weight bias internalization level in the example of Turkish sports or exercise individuals.