Grit: The Power of Passion and Perseverance · chapter 7 · id grit-c7-01-deliberate-practice----not-jus

“Deliberate practice -- not just any practice -- is the key mechanism by which gritty people develop expertise. Duckworth cites Ericsson's framework to support the claim that thousands of hours of structured practice separate experts from novices.”

contestedconfidence: high⚠ extracted by pipeline, re-audit pending

Receipts

Ericsson, Krampe & Tesch-Romer (1993), Psychological Review 100(3), 363-406DOI registry: valid

Individual differences in ultimate performance can largely be accounted for by differential amounts of past and current levels of practice.

Macnamara, Hambrick & Oswald (2014), Psychological Science 25(8), 1608-1618DOI registry: valid

Deliberate practice explained 26% of variance in games, 21% in music, 18% in sports, 4% in education, and less than 1% in professions. Overall, deliberate practice accounted for about 12% of performance variance.

Macnamara et al. (2014), meta-analysis summarypaywalled — manual check queued

A large amount of variance in performance is left unexplained by deliberate practice and is potentially explainable by other factors. Deliberate practice is important but not as important as has been argued.

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