Abstract
The stigma associated with mental illness impacts individuals with serious mental illness (SMI). We developed a questionnaire to explore stigma from the perspective of individuals with SMI. In the first of two studies, we examined content validity, internal consistency, and convergent validity. In Study 2 we explored test-retest reliability, interrater reliability, and concurrent validity. Internal consistency reliability was high (Cronbach's α = 0.852), convergent validity (p < 0.001) and test-retest reliability (ICC = 0.75) were demonstrated, while analyses of concurrent validity were in the expected direction (p < 0.01). The final questionnaire is short with good psychometric properties.
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