Cognitive variability in healthy and impaired older adults: What is it? What causes it? How to measure it?

Cognitive variability clusters into standard cognitive domains, which implies that cognitive variability reflects true variability in cognitive processes rather than results from transient, task-specific influences from the environment (e.g., momentary distractions). Moreover, specific deviations from mean performance have meaningful consequences for real-world behavior, specifically driving. The CVB provides a ready-to-use suite of cognitive tests that are ideally suited to studying variability in daily life.