The book “Peak” - and other works by that author detail studies related to this.
https://en.m.wikipedia.org/wiki/Peak:_Secrets_from_the_New_S...
> The book was written partly as a response to the misrepresented but increasingly commonplace idea of the "10,000-hour rule," popularized by Malcolm Gladwell in his 2008 book Outliers and which Gladwell had based on Ericsson's own research.