Originally Posted by redietz
It wasn't a fair fight. On an IQ test, you would have benefited (a lot) from an age adjustment.
Here's what scientists say:
https://en.wikipedia.org/wiki/Fluid_...d_intelligence
General intelligence is divided into fluid (new stuff) and crystallized (learned stuff). Fluid falls off sharply. Stats:
https://metafact.io/factcheck_answers/2355
Fluid score for a 21-year-old is 100 which is the peak. For a 66-year-old, it's down to 83!
Crystallized peaks at 100 a little later into adulthood, and eases down to 96 for a 66-year-old.
Overall IQ decline is a blend of the two factors. Age 21 is 100; age 66 is 90.
Back to sports, considering someone like Tom Brady or Drew Brees playing into their 40s, they may have been mentally disadvantaged in addition to the physical deterioration.
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