Abstract

Weight stigma internalization among adolescents across weight categories leads to adverse psychological consequences. This study aims to adapt and validate a Chinese version of the Weight Bias Internalization Scale for Mainland Chinese children and adolescents. A total of 464 individuals aged 9 to 15 years participated in the present study. Based on item response theory and classical test theory, we selected the items for the C-WBIS and evaluated its reliability and validity. The item response theory yields support for the one-dimensional factor mode. All item parameters fit the IRT model, eight items were adopted. No evidence of significant differential item functioning was found for gender and age groups. The C-WBIS was correlated with the Core Self-Evaluation Scale and two subscales of the Social Anxiety Scale for Children, which indicated an acceptable criterion-related validity. The C-WBIS is a reliable and valid measure that can be used as a psychometrically sound and informative tool to assess weight bias internalization among children and adolescents.