Only a small proportion of refugees requiring treatment actually receive psychotherapy. Alongside structural barriers, it has been hypothesized that causal attributions for mental health problems that deviate from Western explanatory models may reduce refugees’ help-seeking behavior. Prevailing assumptions suggest that refugees predominantly hold causal beliefs that are incompatible with the rationales of psychotherapy. Testing these assumptions requires a reliable assessment tool to evaluate refugees’ causal beliefs. Therefore, we developed the Causal Attributions for Mental Health Problems Scale (MH-CAUSE) and validated it in a sample of Middle Eastern refugees living in Germany (N = 429). This OSF page contains the data and analyses code used for the psychometric evaluation of the questionnaire