Translation and validation of the Thai Survey Measure of Psychological Safety for interprofessional healthcare teams

Psychological safety (PS) is essential for effective teamwork and communication in interprofessional healthcare teams, contributing to patient safety. However, the limited availability of validated Thai assessment tools has hindered its evaluation. This study aimed to translate and evaluate the psychometric properties of the Thai version of the Survey Measure of Psychological Safety (Thai-SPS). Translation and cultural adaptation followed ISPOR Task Force guidelines. A cross-sectional survey was conducted to examine the psychometric properties of the instrument, with 103 healthcare professionals working in interprofessional teams across four hospitals in Thailand completing an online questionnaire. The Thai-SPS demonstrated excellent content validity (I-CVI = .80–1.00; S-CVI = .98). Cronbach’s alpha coefficients were .95 for the total scale and .82–.93 for the subscales. Exploratory factor analysis supported a three-factor structure consistent with the original instrument. Confirmatory factor analysis provided preliminary evidence for this structure. However, given the relatively small sample size and several fit indices that did not meet commonly recommended criteria, further refinement of the measurement model and validation in larger samples are warranted. Convergent validity was supported by significant positive correlations with Thai-mATHCTS scores (rs = .45, p < .01). These findings support the Thai-SPS as a useful measure for assessing PS in Thai interprofessional healthcare teams.