Darker cells mean a higher score for this topic on that metric.
LessMore
Last reviewed Sources & creditsMedia creditsMethodology
Quick answers
Does this atlas rank groups by IQ, race or nation?
No. Pathways and evidence stay individual. Scores are browsing aids — never group biological or racial ranks.
What did Gladwell change?
He turned a research contrast into a catchy threshold. The book is popularisation. It is not the methods paper.
What did Macnamara et al. 2014 find?
Across domains, deliberate practice accounted for a minority of performance variance — roughly 26% games, 21% music, 18% sports, 4% education in their coding.
Does that mean practice is weak?
A minority of variance can still be the largest controllable lever. It does mean practice is not the whole story — Howe, Hambrick and others have pressed this against strong environmentalism.
What makes practice “deliberate”?
A specific goal, a task beyond current comfort, immediate feedback, and repetition with adjustment. Playing the pieces one already owns is not the same activity.
Is Bloom’s 1985 study the same claim?
Benjamin Bloom’s Developing Talent in Young People described families and teachers around high achievers. It is complementary history, not the violin hour-log.
The people below are a history set for deliberate practice, diverse in country and gender, not a league table.
Years and countries are real. “Why” is a file label, not a rank. No group IQ story is licensed by any of these lives.
Exemplars
- K. Anders Ericsson 1947–2020 · Sweden / United States
Named the construct Memory-span training and the 1993 violin paper. Spent later years correcting the 10,000-hour brand.
- Ralf Krampe 1963– · Germany
Berlin co-author Co-authored the academy diary study that the slogan flattened.
- Clemens Tesch-Römer 1958– · Germany
Berlin co-author Third author on the 1993 Psychological Review paper.
- Benjamin Bloom 1913–1999 · United States
Talent-development interviews 1985 book on families and teachers around high achievers — complementary to hour logs.
- Malcolm Gladwell 1963– · Canada
Populariser Outliers made 10,000 hours a global phrase. Journalism, not a methods paper.
- Brooke Macnamara 1980s– · United States
2014 meta-analysis With Hambrick and Oswald, sized practice’s variance share by domain.
- David Z. Hambrick 1970s– · United States
Residuals after practice Argues for starting points and capacities beside the hour log.
- Michael J. A. Howe 1940–2002 · United Kingdom
Anti-innate-talent essay 1998 BBS paper with Davidson and Sloboda — the strong nurture pole.
Deliberate practice: eight lives, not a ranking. Read them as files, not as a hierarchy of peoples.
OriginsScienceSignsDevelopPracticeExemplarsMyths In this language region