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Computerized Tests of Cognitive Decline in Presymptomatic Alzheimer's Disease

Who can join

Ages 18 to 89 · All sexes · Healthy volunteers welcome

Inclusion Criteria:

* Must be able to use computer mouse and touch screen
* Must speak English as a primary language
* Must speak Spanish as a primary language (for Latino participants completing our Spanish translation)

Exclusion Criteria:

* History of psychiatric disorder
* History of stroke or transient ischemic attack
* History of substance abuse
* History of medical or sensory disorders that are incompatible with effective testing
* History of traumatic brain injury with hospitalization and extended loss of consciousness
* History of epilepsy
* History of depression or anxiety

About the study

The investigators will study performance on computerized cognitive tasks in healthy participants of different ages to gather normative data for newly developed computerized cognitive tests. These tests are designed to permit the early detection of individuals at risk of age-related cognitive decline.

What is being tested

• California Cognitive Assessment Battery (diagnostic test)

Sponsor: Neurobehavioral Systems, Inc. · Participants: 2,000 · Started: May 5, 2021

Contact the study team

• Kathleen Hall, PhD · Phone: 510-214-3176
• David Woods · Phone: 5105279231

Official record on ClinicalTrials.gov — NCT04800588

Locations in the U.S.

Conditions

• Alzheimer's Disease
• Mild Cognitive Impairment

From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.