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Remote, self-administered, smartphone cognitive testing in a registry-based cohort: Feasibility, reliability, and
Sreya Dhanam1, Mark Sanderson-Cimino1, Jack Carson Taylor1
1Department of Neurology, Memory and Aging Center, Weill Institute for Neurosciences, University of California, San Francisco, CA, USA.
Smartphone cognitive tests show promise for Alzheimer's disease and related dementias assessment. These unsupervised tests are feasible, reliable, and valid for cognitive screening in a large adult cohort.
Area of Science:
- Neurology
- Digital Health
- Cognitive Science
Background:
- Remote, smartphone-based cognitive testing offers improved accessibility for Alzheimer's disease and related dementias (ADRD) assessments.
- Evaluating unsupervised, smartphone-based cognitive tests is crucial for widespread adoption.
Purpose of the Study:
- To assess the feasibility, reliability, and validity of unsupervised smartphone-based cognitive tests.
- To determine the performance of the ALLFTD-mApp in a diverse adult population without cognitive impairment.
Main Methods:
- 1,815 adults without cognitive impairment from the UCSF Brain Health Registry completed unsupervised ALLFTD-mApp tasks thrice over two weeks.
- Reliability was measured via session correlations; linear regression analyzed associations with demographics, cognitive concerns (ECog), and web-based tests (CBB).
Main Results:
- High adherence (82.2%) and favorable usability were observed.
- Moderate to strong test-retest reliability (ρs = 0.61–0.85) was demonstrated.
- Lower ALLFTD-mApp scores correlated with older age, lower education, cognitive concerns, and poorer CBB performance.
Conclusions:
- The ALLFTD-mApp demonstrates feasibility, reliability, and validity for cognitive assessment in adults without cognitive impairment.
- Smartphone-based cognitive testing is a viable tool for cognitive health monitoring and early detection of potential decline.
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