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The Best Age to Peak by Profession: A Cognitive-Gap Table

June 19^th, 2026

There is no single peak age. See how 10 professions map onto the abilities that peak at 19, 25, or the late 60s, and why experience offsets raw-speed decline.

18 min•Read more

IQ Science

Does IQ Decline With Age? A Decade-by-Decade Cognitive Trajectory

May 5^th, 2026

Decade-by-decade IQ data from Hartshorne, Salthouse, Schaie, and Singh-Manoux shows no single peak age. See which abilities decline, hold, or rise after 45.

19 min•Read more

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The Best Age to Peak by Profession: A Cognitive-Gap Table

Does IQ Decline With Age? A Decade-by-Decade Cognitive Trajectory

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