In our TA pedagogy class, I read a study that found international-level performers in chess, tennis, and violin all put in somewhere around 10,000 hours of deli

In our TA pedagogy class, I read a study that found international-level performers in chess, tennis, and violin all put in somewhere around 10,000 hours of deliberate practice in childhood. It stated that this requirement didn't necessarily apply to new fields, as Seth proposed. However, it was fairly consistent for well-established endeavors. In other words, this isn't exactly something Gladwell made up. Practice does matter. >"So, even if someone invests 3750 hours they can be just as good." There is no evidence of this. I wish I had a link, but it was in a non-free journal. I can look up the citation if anybody cares enough.