Why does BrainYears™ measure brain function under a task instead of at rest?

Resting-state brain measurement fluctuates with your mood, sleep quality, caffeine intake, and what you happen to be thinking about at the time. It’s like checking the weather today and assuming it tells you the climate forecast for the next ten years.

BrainYears™ puts the brain under controlled cognitive stress — a standardized task — so the measurement reflects how your brain actually functions, not how it happens to feel in the moment. This is why the model’s predictions are stable across repeated assessments and across age groups. The test itself acts as a control for the measurement.