Masao Nagatsuka

Research Center for Behavioral Economics, The Institute of Social and Economic Research (ISER), Osaka University, Osaka, Japan

Hideo Shinagawa

Research Center for Behavioral Economics, The Institute of Social and Economic Research (ISER), Osaka University, Osaka, Japan

Yoshiyaka Okano

Department of Management, Kochi University of Technology, Kochi, Japan

Yuri Kitamura

Department of Social and Environmental Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan

Tatsuyoshi Saijo

Department of Management, Kochi University of Technology, Kochi, Japan