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The Harmonized Cognitive Assessment Protocol (HCAP) is part of an ongoing international research collaboration that aims to facilitate cross-country comparisons on dementia risk using data from a shared, standardized set of assessments. All HCAP studies consist of a battery of cognitive and neuropsychological assessments and informant reports that measure and understand dementia risk and cognitive function among the aging population. The respondent interview is designed to measure a range of key cognitive domains affected by cognitive aging: memory, language, attention, executive function, and visuospatial skills. Informant reports ask informants about their relationship with the respondent, their demographic characteristics, and their perception about the respondent’s cognitive abilities. Due to cross-country differences in literacy and local contexts, country-specific modifications to HCAP assessments may be made.

For more information about the cognitive measures available in the Harmonized HCAP data, please see the comparison table.