Outliers: The Story of Success · chapter 8 · id outliers-c8-05-the-chinese-number-naming-adva

“The Chinese number-naming advantage for mathematics is real but more limited than Gladwell suggests. Research shows the transparent number system (shi yi = 'ten-one' for 11) confers early advantages in place value understanding but these do not explain long-term cross-national differences in arithmetic.”

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Receipts

Mark & Dowker (2015), Frontiers in Psychology: Linguistic influence on mathematical development is specific rather than pervasivesource alive
Exposure to a regular counting system could advance place value understanding and general numerical abilities, but it is unlikely to confer long-term benefits nor be able to explain cross-national differences in arithmetic abilities specifically.
Cheng & Chan (2005), International Journal of Early Years Educationpaywalled — manual check queued
Chinese number-naming advantages are evident in early counting but diminish as children develop. The effect on advanced mathematics is not established.

This claim is a stable, citable object. If you can falsify a verdict, tell us — corrections are loud here.