Driving changes linked to later cognitive decline in older adults
A driving-based model detected 19 of 25 older adults who developed sustained mild cognitive impairment, with a median lead time of 18 months.
Limit: Only 25 participants developed sustained impairment
Edited by Boris Djordjevic · AgingResearch.News
In an observational study, researchers analyzed driving records from 298 older adults who began without cognitive impairment. They tested whether driving changes were linked to sustained mild cognitive impairment, a condition involving problems with memory or thinking.
The researchers measured monthly changes in cornering and the variety of destinations relative to a six-month baseline, adjusting for seasons. They tested the model on each participant after building it using the others. It detected 19 of 25 people who progressed, with a median lead time of 18 months before sustained impairment was recorded. It correctly flagged 76% of those who progressed and correctly left 75% of those who did not progress unflagged. Adding baseline driving measures reduced the model’s ability to distinguish the groups.
Why it matters
Early population screening for Alzheimer’s disease remains limited by access to conventional biological tests. The researchers suggested driving records may provide an objective, scalable behavioral screening tool.
Caveats
This observational study tested prediction, not whether driving changes caused decline. Only 25 participants developed sustained impairment, and the results concern older adults who drove—not screening for Alzheimer’s disease in the general population.
- Machine learning
- Mild cognitive impairment
- Progression to sustained mild cognitive impairment
- Clinical Dementia Rating
- Depression score
- Humans
The paper
Naturalistic Driving Engineered Trajectories Forecast Future Cognitive Decline
Washington University School of Medicine; Mayo Clinic
The Journals of Gerontology, Series B, Oct 19, 2026
