RYUTA ITO

Last Updated :2023/05/10

Affiliations, Positions
Hiroshima University, assistant professor

Basic Information

Major Professional Backgrounds

  • 2021/04/01, Hiroshima University, Assistant professor
  • 2019/04, JMSDF Staff College, part-time lecturer
  • 2021/04/01, Atomi University, Part-time lecturer
  • 2021/04/01, 2022/03/31, Toyo Eiwa University, part-time lecturer
  • 2021/04/01, Hiroshima University, Assistant professor
  • 2018/04/01, 2022/03/31, Keio University, Faculty of Law, part-time lecturer
  • 2019/08/01, 2020/03/31, The Japan Institute of International Affairs, Research Fellow
  • 2017/04/01, 2018/03/31, Keio University, Assistant professor
  • 2013/11/01, 2014/03/31, Keio University, Research associate
  • 2009/04/01, 2013/03/31, Keio University, Faculty of Law, Teaching assistant
  • 2011/04/01, 2012/03/31, Koizumi Shinzo Scholarship, Fellow

Academic Degrees

  • Ph.D. in Law, Keio University
  • M.A. in Law, Keio University

Research Fields

  • Social sciences;Politics;Politics
  • Social sciences;Politics;International relations

Research Keywords

  • International Relations of Indo-Pacific
  • Political psychology
  • History
  • Security Studies
  • International Relations
  • Political Science

Educational Activity

Course in Charge

  1. 2023, Undergraduate Education, First Semester, Evolutionary Political Science
  2. 2023, Undergraduate Education, Second Semester, International Relations Theory
  3. 2023, Undergraduate Education, Second Semester, International Relations Theory
  4. 2023, Undergraduate Education, First Semester, Evolutionary Political Science
  5. 2023, Graduate Education (Master's Program) , First Semester, Evolutionary Political Science
  6. 2023, Graduate Education (Master's Program) , Second Semester, Evolutionary Political Science Seminar

Research Activities

Academic Papers

  1. ★, Hybrid balancing as classical realist statecraft: China's balancing behaviour in the Indo-Pacific, International Affairs, 20220401
    Link to Paper Search Results by DOI
  2. International Norms, Moral Psychology, and Neuroscience Elements in International Relations, International Relations of the Asia-Pacific, 20211223
  3. War and Human Mind: New Hypotheses of Evolutionary Political Science, Paper presented at 2021 American Political Science Association Annual Meeting, 202109
  4. The Causes and Consequences of Nationalism in International Politics: A New Realist Theory Based on Psychological and Neuroscientific Research on Tribalism, Paper presented at the the 26th IPSA World Congress of Political Science, 202107
  5. Toward Liberalism Based on Science and Reason, SYNODOS, 288, 202106
  6. Toward Liberalism based on Science and Reason, SYNODOS, 287, 202105
  7. Liberalism based on Science and Reason, SYNODOS, 286, 202104
  8. Why does Nationalism Cause war? A New Realist Theory Based on Evolutionary and Neuroscientific Research on Tribalism, Paper presented at the 2021 annual convention of the International Studies Association, 202104
  9. Anger and Aggression in International Politics: A New Realist Theory Based on Recalibrational Theory of Anger in Evolutionary Psychology, Paper presented at the 2021 annual convention of the International Studies Association, 202104
  10. Security Studies Reconsidered: The Conflict between Realism and Liberalism, Strategic Studies, forthcoming, 28, 121-136, 202103
  11. The Causes and Consequences of Anger in International Politics: A New Realist Theory Based on the Recalibrational Theory in Evolutionary Psychology, Paper presented at the 2020 annual conference of the International Studies Association (ISA-Midwest), 202011
  12. Overconfidence and War in International Politics: Toward a New Realist Theory Based on Optimism Bias in Neuroscience, Paper presented at the 2020 annual conference of the International Studies Association (ISA-Midwest), 202011
  13. The Causes and Consequences of Hybrid Warfare in International Politics: A New Realist Theory of Hybrid Warfare Based on Classical Realism, Paper presented at the 2020 annual conference of the International Studies Association (ISA-Midwest), 202011
  14. Organizational Innovation and Policy Failure, 87-100, 202010
  15. Alexandra Sakaki, Hanns W. Maull, Kerstin Lukner, Ellis S. Krauss, and Thomas U. Berger, Reluctant Warriors: Germany, Japan, and Their U.S. Alliance Dilemma Washington, DC: Brookings Institution Press, 2019. $41.99, pp. 1–278. (book review), Japanese Journal of Political Science, 21(4), 206-209, 20200909
  16. Trump Politics Reconsidered: Evolutionary Political Science and the Political Leadership of Self Deception, SYNODOS, 202009
  17. How the Human Mind Shapes International Politics: The Emergence of Evolutionary Political Science in International Relations, Paper presented at the 2020 annual conference of the International Studies Association (ISA-West), 202009
  18. Overconfidence and False Optimism in International Politics: A New Realist Theory Based on Evolutionary and Neuroscientific Findings on Optimism Bias, Paper presented at the 2020 annual conference of the International Studies Association (ISA-West), 202009
  19. Anger and Status Competition in International Politics: Application of the Recalibrational Theory of Anger to International Relations, Paper presented at the 2020 annual conference of the International Studies Association (ISA-West), 202009
  20. Evolutionary Political Science and the Scientific developments of Political Science: A Paradigm Shift of Social Science, 1-11, 202008
  21. A New Security Studies on the 'Human Mind': From a Perspective from Evolutionary Political Science, SYNODOS, 1-9, 202005
  22. The Grand Strategy of Realism, Strategic Studies, 185-196, 201910
  23. The Application of Evolutionary Politiccal Science to International Relations: The Case of Realist Theory, Paper presented at the 2019 annual conference of the International Studies Association, Denver, Colorado., 201910
  24. The Causes and Consequences of Overconfidence in International Politics: A New Realist Theory Based on Optimism Bias in Neuroscience, Paper presented at the 2019 annual conference of the International Studies Association, Denver, Colorado., 201910
  25. Reconstructing Positivist Methodology in IR Through Scientific Realism: How to Defend Theoretical Pluralism Without Falling into the Trap of Relativism, paper presented at the 2019 annual convention of the International Studies Association, Toronto, Ontario., 201903
  26. Toward a Theory of Hybrid Warfare: the Case of Chinese Maritime Expansion in the Indo-Pacific Region, Paper presented at the 2019 Bridging the Straits conference held by Sasakawa Peace Foundation, Tokyo, pp. 1-17., 2019
  27. International Relations Theory and Case Study: Toward Construction of a New Methodological Framework, Journal of Law, Politics an Sociology, 92(1), 201901
  28. A Realist Theory of Overconfidence: The Case of the Soviet-Japanese Neutrality Pact, 1941, 44(4), 58-73, 201703
  29. Human Mind and war: Realism based on Evolutionary Political Science, Ph.D. dissertation, Keio University Graduate School of Law, 1-184, 201703
  30. Emotion and Realism in International Politics: A Case Study of the Tripartite Pact, Journal of law and political studies, Vol. 100 (Spring 2014), pp. 155-185 (in Japanese), 155-185, 2014
  31. Prospect Theory in the Study of International Politics: Methodological Problems and Theoretical Implications, Journal of law and political studies, Vol. 98 (Autumn 2013), pp. 103-132 (in Japanese), 103-132, 2013
  32. Review of Whose Ideas Matter?: Agency and Power in Asian Regionalism, by Amitav Acharya, Asian Journal of Public Affairs, 5(1), 2012
  33. reconsidering realism, Keio University, 1-107, 201103
  34. Review of Series Community Ecology 2: an Approach from Evolutionary Biology, Newsletter of Ecological Society of Japan, Vol. 21 (May 2010), pp. 12-14 (in Japanese), 12-14, 201005
  35. Realist Ontology and Neoclacal Realism, Proceedings of Keio University Graduate School of Law, Vol. 50 (March 2010), pp. 147-182 (in Japanese)., 50, 147-182, 201003
  36. Review of China's Struggle for Status: The Realignment of International Relations, by Yong Deng, Asian Journal of Public Affairs, 3(2), 107-108, 2010

Publications such as books

  1. 2022/04/14, Evolutionary Political Science and Peace: Prosperity Based on Science and Reason, 2022, 4, Scholarly Book, Single work, 日本語, 9784829508329
    Amazon URL
  2. 2021/10/21, Evolutionary Political Science and War: Toward a Synthesis of Natural and Social Science, Evolutionary Political Science and War: Toward a Synthesis of Natural and Social Science, 2021, 10, Scholarly Book, Single work, 日本語, 9784829508213
    Amazon URL
  3. Evolutionary Political Science and International Relations theory: A New Analytical Approach to Human Mind and War, Evolutionary Political Science and International Relations theory: A New Analytical Approach to Human Mind and War, Fuyoshoboshuppan, 2020, 2, Scholarly Book, Single work, 日本語, Ryuta Ito, 9784829507834
    Amazon URL

Invited Lecture, Oral Presentation, Poster Presentation

  1. Why Does Nationalism Cause War? A New Defensive Realist Theory Based on Neuro-biological and Psychological Research on Tribalism, Ryuta Ito, Conference organized by International Political Science Association Research Committee on Security, Conflict and Democratization (RC44) on New Nationalisms and Changing Patterns of Conflict, 2021/09/21, With Invitation, English, International Political Science Association
  2. The Causes and Consequences of Nationalism in International Politics: A New Realist Theory Based on Psychological and Neuroscientific Research on Tribalism, Ryuta Ito, The 26th IPSA World Congress of Political Science, 2021/07/10, Without Invitation, English, International Political Science Association, Online
  3. War and Human Mind: New Hypotheses of Evolutionary Political Science, Ryuta Ito, The 2021 Annual Meeting of American Political Science Association, 2021/04/30, Without Invitation, English, American Political Science Association, Online
  4. Anger and Aggression in International Politics: A New Realist Theory Based on Recalibrational Theory of Anger in Evolutionary Psychology, Ryuta Ito, The 2021 annual convention of the International Studies Association, 2021/04/08, Without Invitation, English, International Studies Association, Online
  5. Why does Nationalism Cause war? A New Realist Theory Based on Evolutionary and Neuroscientific Research on Tribalism, Ryuta Ito, The 2021 annual convention of the International Studies Association, 2021/04/06, Without Invitation, English, International Studies Association, Online
  6. The "Decline of Violence" Theory and the Liberal Enlightenment, Ryuta Ito, 2021/03/31, With Invitation, Japanese
  7. Evolutionary Political Science and Security Studies: A New Analytical Approach on "Human Mind and Conflict", Ryuta Ito, Annual Convention of Japan Association for International Security, 2020/12/06, Japanese
  8. Overconfidence and War in International Politics: Toward a New Realist Theory Based on Optimism Bias in Neuroscience, Ryuta Ito, The 2020 annual conference of the International Studies Association (ISA-Midwest), 2020/11/23, Without Invitation, English, International Studies Association, Online
  9. The Causes and Consequences of Anger in International Politics: A New Realist Theory Based on the Recalibrational Theory in Evolutionary Psychology, Ryuta Ito, The 2020 annual conference of the International Studies Association (ISA-Midwest), 2020/11/21, Without Invitation, English, International Studies Association, Online
  10. The Causes and Consequences of Hybrid Warfare in International Politics: A New Realist Theory of Hybrid Warfare Based on Classical Realism, Ryuta Ito, The 2020 annual conference of the International Studies Association (ISA-Midwest), 2020/11/21, Without Invitation, English, International Studies Association, Online
  11. Anger and Status Competition in International Politics: Application of the Recalibrational Theory of Anger to International Relations, Ryuta Ito, The 2020 annual conference of the International Studies Association (ISA-West), 2020/09/26, Without Invitation, English, International Studies Association, Online
  12. How the Human Mind Shapes International Politics: The Emergence of Evolutionary Political Science in International Relations, Ryuta Ito, The 2020 annual conference of the International Studies Association (ISA-West), 2020/09/25, Without Invitation, English, International Studies Association, Online
  13. Overconfidence and False Optimism in International Politics: A New Realist Theory Based on Evolutionary and Neuroscientific Findings on Optimism Bias, Ryuta Ito, The 2020 annual conference of the International Studies Association (ISA-West), 2020/09/24, Without Invitation, English, International Studies Association, Online
  14. Why States Initiate War? From the Perspective of Evolutionary Political Science, Ryuta Ito, SYNODOS TALKLOUNGE, 2020/09/19, With Invitation, Japanese
  15. The Causes and Consequences of Overconfidence in International Politics: A New Realist Theory Based on Optimism Bias in Neuroscience, Ryuta Ito, The 2019 ISSS-IS (International Security Studies Section of ISA and the International Security and Arms Control Section of APSA) annual conference, 2019/10/19, Without Invitation, English, ISSS-IS (International Security Studies Section of ISA and the International Security and Arms Control Section of APSA), Denver, Colorado
  16. The Application of Evolutionary Political Science to International Relations: The Case of Realist Theory, Ryuta Ito, The 2019 ISSS-IS (International Security Studies Section of ISA and the International Security and Arms Control Section of APSA) annual conference, 2019/10/18, Without Invitation, English, ISSS-IS (International Security Studies Section of ISA and the International Security and Arms Control Section of APSA), Denver, Colorado
  17. Reconstructing Positivist Methodology in IR Through Scientific Realism: How to Defend Theoretical Pluralism Without Falling into the Trap of Relativism, Ryuta Ito, The 2019 annual convention of the International Studies Association, 2019/03/30, Without Invitation, English, International Studies Association, Toronto, Ontario
  18. SIno-Japanese War and Nationalism: A Study from the Perspective of Realist Theory, Ryuta Ito, 2018 Japan Association for International Security Annual Convention, 2018/12/02, Without Invitation, Japanese
  19. Why Does Nationalism Cause War?: Toward Construction of a New Theoretical Framework, Ryuta Ito, 2018 Japan Association for International Security Annual Convention, 2018/11/04, Without Invitation, Japanese
  20. The Application of Evolutionary Political Science to International Relations: The Case of Realist Theory, Ryuta Ito, 2017 Japan Association of International Relations Annual Convention, 2017/10/27, Without Invitation, Japanese
  21. The Scientific validity of Realist Theory: A reexamination of Tribalism and Power Politics through Evolutionary Political Science, Ryuta Ito, 2017 Japan Association of International Security regular convention, 2017/04/22, Without Invitation, Japanese

Social Activities

History as Committee Members

  1. Committee of Best International Security Article, 2020/10, 2021/03, American Political Science Association
  2. Editor, 2020/05, 2023/03, The Japan Society of Strategic Studies
  3. General affairs committee, 2019/04, 2023/03, Japan Association for International Security
  4. Assistant general affairs committee, 2018/04, 2019/03, Japan Association for International Security

Organizing Academic Conferences, etc.

  1. 2022/03, 2022/03
  2. 2021/08, 2021/08
  3. 2021/07, 2021/07
  4. 2021/05, 2021/05