Prof. Hiromi Yokoyama, Kavli IPMU/III, The University of Tokyo

Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU)

Graduate School of Interdisciplinary Information Studies (III), Cultural and Human Informatics Course

The University of Tokyo


Hiromi Yokoyama is a Professor and Deputy director of Kavli Institute for the Physics and Mathmatics of the Universe(Kavli IPMU),at the University of Tokyo. I became an Science and Technology Studies (STS), science policy and Science communication (SC) researcher after Ph.D in particle experimental physics (K2K). I am a member of the Graduate School of Interdisciplinary Information Studies / The University of Tokyo and runs the laboratory.I am a board member of the STS Society of Japan, the Institute of National Colleges of Technology, and the International Physics Olympiad 2023 Association.

I am conducting research on mainly in three areas.

1.Trust in Science, scientific advice and STS core issues : COVID-19, AI, Fukushima Issues

2.ST&I governance and policy, ELSI-RRI : especially AI ethics and climate engineering ethics

3.Science of Science communication : STEM gender issues

Link:Researchmap(Lists of Papers, Books, Councils, Articles, Media), twitter(Eng)

Email:hiromi.yokoyama (a) 

Recent News

2023.8 Gest editor : Call for Papers: Special Issue on "Public (Dis)trust in Science in Digital Media Environments" in JCOM

2023.7 The Kavli Foundatoin diecided to support PI Yokoyama's project. (press release)

2023.7 Nature Correspondence "Large language model is a flagship for Japan" Shoraro Kinoshita and Hiromi Yokoyama

Main Career

  • 2022.4-Present: Board member of National Institution of National Colleges of Technology
  • 2022.4-Present: Deputy Director, Kavli Institute for the Physics and Mathematics of the Universe, The University of Tokyo
  • 2021.6-Present: Board member of International Physics Olympiad 2023 Association
  • 2021.4-2022.3: Director of Public Relations Office, Director of Public Relations Strategy and Planning Office, and Deputy Director of Public Relations Strategy Headquarters, The University of Tokyo
  • 2019.4-Present: Board member of Japan Society for the Social Studies of Science and Technology
  • 2017.4-Present: Professor, Kavli IPMU & Graduate School of Interdisciplinary Information Studies, Cultural and human information studies course, The University of Tokyo
  • 2014-Present: Editorial board member, JCOM / Journal of science communciation
  • 2007.4–2017.3: Associate Professor, School of Science ,University of Tokyo
  • 2005.4–2007.3: Senior Researcher, SOKENDAI, Hayama Center
  • 2004.10: Researcher (changed research field, science and society) Tokyo Institute of Technology
  • 2004.9: Ph.D. in Science , Tokyo University of Science, Graduate School of Science and Technology, Physics Department
  • 1999.3: B.A. in Physics, Tokyo University of Science, Faculty of Science and Technology, Physics Department

  • Main Prizes

  • 2016 As a member of K2K, Breakthrough Prize in Fundamental Physics
  • 2015 Science and Technology Society Society, Kakiuchi Kessiuchi Research Encouragement Prize
  • 2007 Science Journalist Award 2007, Japanese Association of Science & Technology Journalists

  • Main papers

    AI Ethics / AI-ELSI segmentIkkatai, Y., Hartwig, T., Takanashi, N. et al. Segmentation of ethics, legal, and social issues (ELSI) related to AI in Japan, the United States, and Germany. AI Ethics (2022).

    AI Ethics / ELSI Score:Hartwig, T., Ikkatai, Y., Takanashi, N. & Yokoyama, H.M. (2022). 'Artificial intelligence ELSI score for science and technology: a comparison between Japan and the US'. AI & Soc.

    AI Ethics /AI-ELSI Octagon measurementsY.Ikkatai, T.Hartwig, N.Takanashi & H.M. Yokoyama (2022). 'Octagon Measurement: Public Attitudes toward AI Ethics',International Journal of Human–Computer Interaction

    Trust in experts / COVID-19Yokoyama HM and Ikkatai Y (2022) Support and trust in the government and COVID-19 experts during the pandemic. Front. Commun. 7:940585. doi: 10.3389/fcomm.2022.940585

    Inclusive STEM / Social climate extended modelIkkatai, Y., Inoue, A., Minamizaki, A., Kano, K., McKay, E. and Yokoyama, H. M.(2021). ‘Masculinity in the public image of physics and mathematics: a new model comparing Japan and England’. Public understanding of science,

    Inclusive STEM:Ikkatai, Y., Inoue, A., Minamizaki, A.,Kano, K., McKay, E. and Yokoyama, H. M.(2021).‘Effect of providing gender equality information on students’ motivations to choose STEM’.PLOS ONE.

    Inclusive STEM:Ikkatai Y.,Inoue A., Kano K., Minamizaki A., McKay E., & Yokoyama H.M.(2019). Parental egalitarian attitudes towards gender roles affect agreement on girls taking STEM fields at university in Japan’.International Journal of Science Education , 41(16), 2254-2270.

    Risk Comm Practice / COVID-19Igarashi, Y., Mizushima, N. and Yokoyama, H. M. (2020). ‘Manga-based risk communication for the COVID-19 pandemic: a case study of storytelling that incorporates a cultural context’. JCOM 19 (07), N02.

    Scientific advice/ Group voice proposal:Yokoyama, H. (2019). ‘Proposal for group voice: going beyond the limits of one voice and making information provided by scientists available to the public in emergency situations’. In: Environmental contamination from the Fukushima nuclear disaster: dispersion, monitoring, mitigation and lessons learned. Ed. by T. Nakajima, T. Ohara, M. Uematsu and Y. Onda. Cambridge, U.K.: Cambridge University Press, pp. 271–277.

    Open science/ budget community proposal:Ikkatai Y., McKay E., & Yokoyama H.M.,(2018). Science created by crowds: a case study of science crowdfunding in Japan. Journal of Science Communication,17(03), A06.

    Scientific advice:中谷内一也, 長谷和久, & 横山広美, (2018). 科学的基礎知識とハザードへの不安との関係,心理学研究,89(2),171-178.

    Fukushima nuclear power plant accident:Tateno S., Yokoyama H.M. ,(2013). Public anxiety, trust, and the role of mediators in communicating risk of exposure to low dose radiation after the Fukushima Daiichi Nuclear Plant explosion. Journal of Sicence Communication,12(02),A03.

    High energy particle pysics: K2K collaboration "Evidence for muon neutrino oscillation in an accelerator-based experiment." Physical review letters 94.8 (2005): 081802.

    High energy particle pysics: K2K collaboration "Indications of neutrino oscillation in a 250 km long-baseline experiment." Physical Review Letters 90.4 (2003): 041801.

    Others Main papers(in Japanese)


  • Graduate School of Science, The University of Tokyo : Modern Science and Communication Theory
  • This is a representative lecture that has continued since 2007. There are many participants from other graduate schools in the three-day intensive lectures and lectures for graduate students at the university. It also deals with science in Japan and the United States after World War II, changes in scientific theory, recent science and technology policies, scientific advice, and risk communication.

  • The University of Tokyo FoPM Diversity and Ethics Seminar
  • University of Tokyo Graduate School of Science, Research Ethics Common Teaching Materials Provided
  • Interfaculty Initiative in Information Studies, The University of Tokyo Science Communication Theory/Science and Technology Representation Theory I (1 class)
  • Interfaculty Initiative in Information Studies, University of Tokyo Research and Survey Method 2 (in charge of 1 unit)
  • And some graduate lectures at the University of Tokyo
  • In charge of several one-hour lectures at other universities
  • Photos

    Kavli IPMU 16th anniversary(2023)

    Kavli IPMU Center for Data-Driven Discovery (CD3)opening ceremony(2023)

    Lab member(2023)

    Visiting student : Shuo Wang, Ph.D candidate,Tsinghua University

    K2K/SciFi G.(2004)


    2022.11 Why are there so few women in science?(in Japanese)

    Research introduction interview

    Construction of science and technology ethics indicators for advanced science and technology such as AI and genome editing

    Why are few women studying mathematics and physics in Japan?

    Youtube in Japanese

    Leading research projects