Recent books such as Malcolm Gladwell’s Outliers and Talent is Overrated (Colvin) have suggested that deliberate practice – structured practice designed to improve performance in music, sports, games, or a profession – accounts for most of the difference between average and “star performers.” In other words, the main difference between you and Tiger Woods is the thousands of hours he spends in deliberate golf practice. Very recent research suggests that deliberate practice, while important, doesn’t seem to compensate for talent and natural abilities (such as intelligence).
A meta-analysis that will soon be published in the journal, Psychological Science, looked at the effect that deliberate practice had on performance in sports, games, music, education, and professions. The results showed that, across a number of studies, the amount of deliberate practice only explained 12% of the variance in performance. This means that the vast majority of variance in performance is caused by something else.