Look at the top athletes in the world and you'll notice they come from a variety of backgrounds. Tiger Woods began specializing at a young age, while Roger Federer only specialized as he started to achieve success later. Why did Federer benefit from a generalist childhood vs. a specialization one? Author David Epstein has focused on the topic for his upcoming book Range. He joins the GAINcast this week to talk about what he has found in the research on early specialization in sports, and as well as in other aspects of life.