Findings from adoption, family, geographical, immigrant, molecular genetic, surname, and twin studies suggest genetic risk factors have a role in suicidal behavior. However, related mental health literacy (knowledge and beliefs) even of future health-care professionals who will be concerned with suicide lag behind this research progress. As no scale for assessing such beliefs is available, the 22-item Beliefs in the Inheritance of Risk Factors for Suicide Scale was constructed, its contents rated by experts in a validation survey and administered to samples of 70 medical and 165 psychology students. Medical students held stronger beliefs in the genetics of suicide than psychology students. Internal scale consistency and test-retest reliability were assessed as adequate. Factor analysis of the 22 items yielded a dominant first factor. Scores were positively related to knowledge about suicide (convergent validity) but for the most part unrelated to lay theories of suicide, political orientation, religiosity, and social desirability (discriminant validity). This novel scale shows potential for assessing individuals' beliefs about the genetics of suicide. Applications may include basic research, educational contexts, and evaluation of professional training.
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