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*[https://www.chess.com/news/view/top-chess-players-peak-between-35-45-science Top Chess Players Peak Between 35 and 45, Research Shows], Chess.com
 
*[https://www.chess.com/news/view/top-chess-players-peak-between-35-45-science Top Chess Players Peak Between 35 and 45, Research Shows], Chess.com
 
*[https://www.chess.com/article/view/chess-players-peak At What Age Do Chess Players Peak?], Chess.com
 
*[https://www.chess.com/article/view/chess-players-peak At What Age Do Chess Players Peak?], Chess.com
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*[Life cycle patterns of cognitive performance over the long run], PNAS, October 19, 2020, 117 (44) 27255-27261, https://doi.org/10.1073/pnas.2006653117
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*[https://www.pnas.org/doi/10.1073/pnas.2006653117 Life cycle patterns of cognitive performance over the long run], PNAS, October 19, 2020, 117 (44) 27255-27261, https://doi.org/10.1073/pnas.2006653117
    
== Books ==
 
== Books ==
Irenaeus, Siteadmin, Check users, oversight, Administrators
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