The Athletic] Was Brock Purdy's emergence predictable? S2 Cognition test has pointed to NFL success : r/nfl
49ers QB Brock Purdy undergoes successful surgery, expected to start throwing in 3 months: Source - The Athletic
What Is the S2 Cognitive Test, and Does It Matter in Predicting QB Performance?
Data Reveals That 49ers QB Brock Purdy Scored High On his S2
PDF) An investigation of perceptual processing in autistic spectrum disorder using mis-tuned harmonics.
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Wonderlic, Schmunderlic: The S2 Cognition Test Is Where It's At - Detroit Lions — The Den - The Den
49ers Quarterback Brock Purdy Backs Up His Test Results – OutKick