Current Professional Services

IEFS Japan, Executive Committee Member
Japanese Economic Review, Coeditor
Keio Economic Studies, Editor

Economic Theory, Associate Editor
Annals of Mathematical Economics, Member of Editorial Board

Mathematical Reviews, Reviewer

Japanese Economic Association, 理事

Past Professional Services

Japanese Economic Review, Associate Editor
Economic Studies Quarterly, Associate Editor

Japanese Economic Association, 常任理事 (1996-1999)
Tokyo Center for Economic Research, 理事 (1988-1989).