Evaluating Differential Item Functioning (DIF) of the Chinese Version of the Behavioral Activation for Depression Scale (C-BADS)

Abstract

Abstract. Depression is prevalent in both China and Taiwan, and Behavioral Activation (BA), an Evidence-Based Treatment (EBT) for depression, is ideally suited for cross cultural implementation. As a first step, the current study examined cross cultural differences in the understanding of BA constructs, by investigating item level differences in functioning between the English and Chinese versions of Behavioral Activation for Depression Scale (BADS and C-BADS; Kanter, Mulick, Busch, Berlin, & Martell, 2007 ; Li, Ding, Kanter, Zeng, & Yang, 2014) . 752 college students were recruited from China, Taiwan, and the United States. Factorial invariance-based Differential Item Functioning (DIF) analysis was used to study item level differences in functioning for the BADS and C-BADS. Results. DIF was observed in the majority of BADS items, with items in the avoidance and impairment factors showing the greatest DIF. The constructs of avoidance and impairment demonstrate less cross-cultural generalizability compared to the activation construct. Suggestions for the implementation of DIF analysis for future cross cultural psychometric studies, and further modification of the C-BADS as a clinical assessment tool in China and Taiwan, are discussed.