JEL Classification Number: I31 Keywords: Happiness, risk aversion, time discount rate, survey, Japan Correspondence: Yoshiro Tsutsui Institute of Social and Economic Research Osaka University 6-1 Mihogaoka, Ibaraki 567-0047 Japan Phone: +81-6-6879-8560 Fax: +81-6-6878-2766 e-mail: tsutsui@econ.osaka-u.ac.jp Frey and Stutzer, 2002 Ohtake and Tomioka (2004) (2004) 4200 10 0 1 4187 1009 25% 20% 18% 1