Featured News and Research Highlights
November 6, 2025
Wave VI Add CAPS Data Released
The following Add CAPS data are now available: Animal Naming Test This test provides data on a participant’s verbal fluency/language by assessing their ability to generate words within a semantic category under time constraints. Participants are asked to name as many animals as possible within a fixed time period. The...
Read More
September 29, 2025
Wave VI Data Now Available!
Add Health is pleased to announce the following Wave VI Restricted-Use Data are now available: Wave VI Mixed-Mode Survey (Samples 1 and 2) Wave VI Mixed-Mode Survey (Sample 2) Wave VI AddCAPS - Test My Brain Wave VI Survey Medications Wave VI Final Disposition of Initially Eligible Cases Wave VI...
Read More
September 23, 2025
New Add Health Contracts Management System (CMS) Now Available!
The new Contracts Management System (CMS) is now available. Any researcher interested in applying for a new restricted-use contract or renewing their existing contract may access the CMS via the Add Health Data Portal. Researchers now have two options for accessing Add Health restricted-use data: 1. Secure Research Workspace (SRW) Contract:...
Read More
September 18, 2025
Alzheimer’s Risk Factors and Cognitive Function Before Midlife: Evidence From the Add Health Study
Most U.S. Alzheimer’s disease (AD) research focuses on older adults, leaving little understanding of risk factors earlier in life across representative populations. Using nationally representative data from Waves IV and V of the National Longitudinal Study of Adolescent to Adult Health (Add Health), researchers investigated whether widely cited AD risk...
Read More