The Comprehensive Assessment of Prospective Memory (CAPM) is a questionnaire designed to evaluate frequency of prospective memory (PM) failures in people with brain injury. The aims of this study were to investigate the psychometric properties of the CAPM, including test-retest reliability and internal consistency, and to establish normative data by comparing CAPM scores between groups on the basis of sex, age, and education. Data were collected on 95 people aged 15-60 years living in the community, with no history of brain injury, using the CAPM. The results showed that the test-retest reliability and internal consistency for the CAPM were within acceptable ranges, indicating that the CAPM provides a stable and homogenous measure of an individual's self-report of PM failures. Normative data are presented in two age groups based on the significant difference found between the age groups 15-30 years and 31-60 years. These established norms can be used to describe perceived or observed behaviours indicative of PM failure in patients with brain injury by comparing CAPM ratings from significant others with the norms. The CAPM questionnaire provides researchers or clinicians with a stable and reliable assessment option that specifically focuses on PM for individuals with brain injury. © 2007 Psychology Press.
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