The Body Acceptance by Others Scale-2 (BAOS-2): Psychometric properties of a Bahasa Malaysia (Malay) translation and an assessment of invariance across Malaysia, the United Kingdom, and the United States

The Body Acceptance by Others Scale-2 (BAOS-2) is a 13-item instrument measuring generalised perceptions of body acceptance by others. Here, we first demonstrate that a Bahasa Malaysia (Malay) translation of the BAOS-2 is psychometrically valid in a sample of 1,049 Malaysian adults (Study 1). Using exploratory and confirmatory factor analysis, we extracted a unidimensional model of BAOS-2 scores that retained all 13 items. BAOS-2 scores had adequate internal consistency and indices of validity (convergent, construct, concurrent, and incremental), and were scalar invariant across gender and ethnicity (Malaysian Malays vs. Chinese). Next, we assessed invariance of BAOS-2 scores across samples from Malaysia, the United Kingdom, and the United States (total N = 2,575; Study 2). Multi-group confirmatory factor analysis showed that partial scalar invariance was achieved. Participants in the interdependent cultural context of Malaysia had significantly higher scores - with small effect sizes - than their counterparts in the independent contexts of the United Kingdom and United States. In addition, women had significantly higher scores than men, but the effect size was negligible. The present study indicates that the Malay BAOS-2 is a psychometrically valid instrument and presents the first comparison of BAOS-2 scores across interdependent and independent contexts.