Despite their impact on the economy, relatively little is known about entrepreneurs' backgrounds and motivations. A study released by the Kauffman Foundation in July, titled "The Anatomy of an Entrepreneur," led by co-authors Vivek Wadhwa, University of Akron's Raj Aggarwal, University of California's Kristina "Z" Holly and former BusinessWeek tech editor Alex Salkever, aimed to discover who American entrepreneurs are and what makes them tick. To do so, the team surveyed 549 successful business founders from high-growth industries between August 2008 and March 2009. Now, the team is back with a second report, "The Making of a Successful Entrepreneur," in which respondents answer questions about the factors that contributed to their companies' success. Flip through this slide show for Wadhwa's thoughts on the most compelling data.