Anders Ericsson, PhD, is Conradi Eminent Scholar and Professor of Psychology at Florida State University. He studies expert performance in domains such as music, chess, medicine, and sports, and how expert performers attain their superior performance by acquiring complex cognitive mechanisms through extended deliberate practice. He has edited “Cambridge Handbook of Expertise and Expert Performance” (2006) and “The Development of Professional Expertise” (2009). In the book Outliers
, Malcolm Gladwell based his “10,000 hour rule” on Ericsson and colleagues’s research on musicians.