Adult Changes in Thought Study
Photograph of a physical therapist testing an elderly patient's balance

For ACT Study Participants


If you’ve found this page, you are probably either a current participant in the Adult Changes in Thought (ACT) Study or are considering joining the study in response to our invitation to you.

The ACT Study, which started in 1994, is a research study conducted by staff at Kaiser Permanente Washington and the University of Washington to learn what causes changes in memory and thinking abilities as people age. The goal is to better understand and prevent Alzheimer’s disease and related dementias and improve care for older adults. We couldn’t do any of our research work without participants like YOU! Thank you!

In the pages below, you’ll find information about the study, its activities, and your role as a participant. If you’re a current participant trying to track down information about clinic visits or a prospective participant wanting to figure out what this study is all about, please check out the materials linked below. If you still have questions, you can always reach the ACT Study team by phone (206-442-5228) or by using our Contact Us form.

Resources for Participants

Study Overview

Here you can find a brief history of the ACT Study and a short overview of what it means to be a participant in the study.

Participant Newsletters

Review the archive of past newsletters sent regularly to ACT Study participants.

Consent Form

You can download a blank copy of our current standard consent form. You would have signed and received a copy of this form when you enrolled in the study.

Directions to Research Clinic

On this page, you can find a map and driving directions to our research clinic in downtown Seattle, Washington.

Activity & Sleep Devices

On this page, you can information about the activity and sleep monitoring devices used in ACT and find helpful instructions and information about wearing or returning a device.