Developing and Validating Thai Sexual Orientation Microaggression and Microaffirmation Scales.

Mental health disparities exist for sexual minority populations globally. Microaggressions and microaffirmations related to sexual orientation may negatively or positively impact well-being. Culturally validated tools are needed to assess these constructs among LGBQ+ (lesbian, gay, bisexual, queer/questioning) individuals in Thailand's high-context culture. This study aimed to develop and validate the Thai Sexual Orientation Microaggressions Scale (T-SOMG) and the Thai Sexual Orientation Microaffirmations Scale (T-SOMF) to quantify experiences among LGBQ+ Thais. A mixed-methods approach was utilized. Initial scale items were derived from a literature review, expert consultation, and interviews with LGBQ+ Thais. Exploratory factor analysis (n = 164) refined the item pools. Confirmatory factor analysis (n = 200) confirmed the factor structures. Reliability and validity were examined. The final 18-item T-SOMG contained two subscales-Interpersonal and Environmental Microaggressions. The 13-item T-SOMF contained Interpersonal and Environmental Microaffirmations subscales. All scales demonstrated good model fit, reliability, convergent validity, and discriminant validity. The T-SOMG and T-SOMF are culturally valid tools for assessing microaggressions and microaffirmations among LGBQ+ Thais. These localized scales can enable research on factors impacting LGBQ+ well-being. Further validation in diverse samples is warranted.