Outliers: The Story of Success · chapter 2 · id outliers-c2-07-ericsson-himself-never-used-th
“Ericsson himself never used the phrase '10,000-hour rule' and objected to Gladwell's interpretation. Ericsson's original 1993 study found violinists at the Berlin Academy had accumulated an average of 10,000 hours by age 20, but this was a descriptive average, not a prescriptive threshold.”
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Receipts
Six Seconds: The Great Practice Myth: Debunking the 10,000 Hour Rulesource alive
Ericsson argued that Gladwell distorted his findings. The 10,000 hours was an average of the best violin group, not a universal threshold. Some reached elite status with fewer hours, others needed more.
Harwell & Southwick, Journal of Expertise: Beyond 10,000 Hourssource alive
Ericsson never proposed a '10,000-hour rule.' The number was the average accumulated practice of the best violinists. Individual variation around this average was substantial.
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