1999 Lecturer, Seikei University
2000 Associate Professor, Seikei University
2001 Ph.D., University of Michigan
2004 Professor, Seikei University
2005 Professor, Keio University
2009 Professor, GRIPS
2011 Advisor to the President, GRIPS
2014 Vice President, Dean, GRIPS
2017 Executive Vice President, Dean, GRIPS

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Legislative Power and Democracy. (in Japanese) Tokyo: University of Tokyo Press, 2015.

Agenda Power in the Japanese Diet: A Duration Analysis of Lawmaking. (in Japanese) Tokyo: Bokutakusha, 2003.
Guide to Data Analysis for Students of Political Science. (in Japanese) with M. Yamada. Tokyo: University of Tokyo Press, 2004.

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"Instant Parliamentary Deliberation Are in Our Reach." with K. Takeda. 2015. (in Japanese) ?Leviathan 56: 54-79.

“Measuring Judicial Independence Reconsidered: Survival Analysis, Matching, and Average Treatment Effects." with K. Fukumoto. 2015. Japanese Journal of Political Science. 16: 33-51.

"Legislative Institutions?and the Fusion and Separation of Powers." 2013. (in Japanese) in Textbook Public Choice. ed. H. Kawanobe and M. Nakamura, Tokyo: Keiso Shobo. pp. 120-138.

"Electoral Competition in Single-member Districts: Dual Candidacy and Incumbency Advantage." 2013. (in Japanese) ?Leviathan 52: 8-42.

"Prime Minister Survival and?Time Dependence." 2011. (in Japanese) ?Communications of the Operations Research Society of Japan 56: 227-231.

"Party System and Legislative Politics"?2010. (in Japanese) Journal of Law, Politics and Sociology. 83(11): 136-155.

"The Diet Law Revisions and Institutional Selection." 2010. (in Japanese) Journal of Public Policy Studies. 9(2009): 48-66.
"An Analysis of the Votes of No-confidence in the Japanese Diet" 2009. (in Japanese) Annals of Japanese Political Science Association 2009-I, pp. 79-109.
"Bicameralism and the Separation of Powers in Japan." 2008. (in Japanese) in Keio's Political Science: Japanese Politics. ed. Keio University, Department of Law, Tokyo: Keio University Press. pp. 267-284.
"The Survival of Prime Minister Fukuda and the House of Representatives Elelction." 2008. (in Japanese) in Characterizing Japanese Politics and Society under the Context of East Asia. ed. Tzu-Chin Huang, Taipei: Academia Shinica. pp. 441-457.
"Time to Leave? A Duration Analysis of Party Defection" with M. Tatebayashi. 2007. (in Japanese)Journal of Law, Politics and Sociology. 80(8): 120-136.
"The Survival of Prime Ministers and the House of Councillors." 2007. Social Science Japan Journal. 10(1): 81-93.
"Legislative Studies: Fusion and Separation of Powers" 2007. (in Japanese) Leviathan 40: 212-223.
"Rationalizing the House of Councilors: Bicameralism and the Fusion of Power" 2006. (in Japanese)Public Choice Studies 46: 45-53.
"Legislative Gains vs. Position Taking: How the Diet Makes Supplementary Resolutions" 2006. (in Japanese) Leviathan 38: 131-153.
"The Diffusion of Power in the Diet." 2005. Journal of Law, Politics and Sociology. 78(11): 64-86.
"Time Constraint and Agenda Control in the Japanese Diet" 2005. with S. Kawato. (in Japanese) Annals of Japanese Political Science Association 2005-I, pp. 181-200.
"An Analysis of Group Lobbying in Japan and Korea" 2005. with J. Iio and Y. Onishi. (in Japanese)Review of Asian and Pacific Studies. 29: 73-92.
"A Duration Analysis of Judicial Career: Remeasuring Judicial Independence" (in Japanese) Journal of Legal, Political and Social Science. 61: 411-456, 2005.
"Japan: The Prime Minister and the Japanese Diet." with B. Nyblade. 2004. Journal of Legislative Studies. 10(2/3): 250-262.
"Power-dispersive Cabinet System in Japan and Centralized Presidential System in Korea" 2004. with J. Iio (in Japanese) in Comparative Analysis of Politics in Changing Japan and Korea. ed. Y. Sone and J. Choi. Tokyo: Keio University Press. pp. 83-116.
"Representative Democracy and the Fusion-diffusion of Power in the Japanese Diet" 2004. (in Japanese)Journal of Legal, Political and Social Science. 58: 117-140.
"Representative Systems and Their Consequences on Party Fusion and Fragmentation" 2003. (in Japanese) Journal of Legal, Political and Social Science. 57: 504-538
"Government Stability and Economic Changes: Time-Varying Data in Duration Analysis" 2002. (in Japanese) Annuals of Japanese Political Science Association 2002, pp. 231-245.
"Legislative Agenda Power and Administrative Autonomy" 2002. (in Japanese) Leviathan 30: 41-66.
"Prime Minister Survival and Cabinet Approval" 2001. (in Japanese) Public Choice Studies 37: 14-24.
"Parliamentary Management and Elections: A Heteroskedastic Probit Model of Legislative Voting" 2001. (in Japanese) Japanese Journal of Electoral Studies. 16: 55-66.
# the 6th Miyake Award for Best Work in Japanese Politics
"Is the Japanese Diet Consensual?" 2000. Journal of Legislative Studies. 6(4): 9-28.
"Agenda Power in the Japanese House of Representatives." with G. Cox and M. McCubbins. 2000.Japanese Journal of Political Science. 1: 1-21.
"Analyzing Legislative Time" 2000. (in Japanese) Leviathan 26: 150-167.

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Editorial Committee Member, "Leviathan," 2009-present.
Book Review Committee Member, "Leviathan," 2008-2010.
Program Officer, Ministry of Education, Research Promotion Bureau, 2006-2008.
Public Information Committee Chair, Musashino City, 2005-2009.
Administrative Evaluation Committee Vice Chair, Adachi Ward, 2005-2008.

Steering Committee Member, "21st Century Rincho," 2004-present.
Editorial Committee Member, "Public Choice Studies," 2004-2011.
Local Governance Planning Committee Member, Musashino City, 2003-2004.
Official Exam Preparation Committee Member, National Personnel Authority, Human Resource Bureau, 2002-2009.

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Research Project Leader of Comparative Legislative Information Project (with the JSPS Grant-in-Aid for Scientific Research [S] FY2010-2014, FY2015-2019)

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