Research shows productivity and judgment peak decades after graduation

A growing body of research continues to show that older workers are generally more productive than younger employees.

Annie Coleman, founder of consultancy RealiseLongevity, analyzed the data and highlighted a 2025 study finding peak performance occurs between the ages of 55-60.

Writing in the Stanford Center on Longevity blog, she cited research examining 16 cognitive markers that confirm that although processing speed declines after early adulthood, other dimensions improve, and overall cognition peaks near retirement age.

Studies from the past 15 years show that some qualities like vigilance may worsen with age alongside processing speed, but others improve, including the ability to avoid distractions and accumulated knowledge.

These factors matter more as AI starts to eliminate jobs for grads and entry-level candidates, increasing the value of experienced workers who can mentor other employees.







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