December 22, 2025
The 2022 Harmonized Cognitive Assessment Protocol (HCAP) Respondent and Informant Data is now available. HCAP is a substudy within the ongoing Health and Retirement Study (HRS) that seeks to measure and understand dementia risk by collecting a carefully selected set of established cognitive and neuropsychological assessments and informant reports to better characterize cognitive function among older people. HCAP collects data from the target respondent and a knowledgeable informant. The 2022 HCAP is the second wave of the study.