Reaction time variation may be a marker that predicts mortality in old age. ScienceDaily . Retrieved June 2, 2025 from www.sciencedaily.com / releases / 2017 / 08 / 170809151426.htm ...

After studying 3,305 people ages 16 to 44, researchers found that the brain’s response time begins to decline at age 24. The descent is a slow, but nonetheless, steady one.