Born entrepreneur? Adolescents' personality characteristics and self-employment in adulthood / Jutta Viinikainen (Jyväskylä University School of Business and Economics), Guido Heineck (University of Bamberg and IZA), Petri Böckerman (Turku School of Economics, Labour Institute for Economic Research and IZA), Mirka Hintsanen (University of Oulu), Olli Raitakari (CAPC, University of Turku and Turku University Hospital), Jaakko Pehkonen (Jyväskylä University School of Business and Economics) ; IZA