Link to Athletic article
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The battery of tests they had patients perform then are similar to the ones the athletes take now, only they’re modified to record the differences between brains that are merely healthy and ones that work on another level.
Ally says the results are predictive.
He couldn’t give out Purdy’s exact score because it’s privileged information but said it was in the “mid 90s.” That’s about where Brees, the former Saints quarterback famous for lightning-fast decision-making, scored and where two of the top passers in the league now, the Chiefs’ Patrick Mahomes and the Bills’ Josh Allen, also landed. The Bengals’ Joe Burrow took the test while at LSU and agreed to allow S2 to disclose the information.
Of course he did — he scored in the 97th percentile.
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The article goes on to say that safety, cornerback and linebacker are the other positions where heightened awareness and response time are reflected in scores and correlate with success.