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 Yoshiyuki Yokoro 

I am currently a JSPS postdoctoral fellow at Nanzan University Institute for Social Ethics in Nagoya. 

You can reach me at yokoro.y[at]

横路 佳幸 [researchmap]



I work primarily in metaphysics, semantics, epistemology, and metaethics, and I have interests in the intersection of metaphysics with bioethics.​
My research has focused on metaphysics of identity and other related areas including semantics and philosophical psychology. I address the following three issues: (a) What is the relation of numerical identity obtaining between every object and itself, and what is the metaphysical ground for the obtaining of it? (b) What meaning do identity-expressions such as ‘identical’ and ‘is’ have, and what is the truth condition for every identity-statement? (c) What mechanism does the cognitive individuation of objects exerted by competent perceivers have and how does it succeed? In conducting this research, I use what is called sortal concepts such as a cat, a river, and a statue, and develop a sortalist approach to issues (a) to (c) on the basis of arguments of Peter T. Geach, David Wiggins, E. J. Lowe, and others.
Recently, I have started to apply my metaphysical theories of numerical identity to identity of we human persons. I am interested in questions such as the following: What is the relationship between persons and human animals? In virtue of what fact do we persons emerge? What material parts persons have if they have any? What is the criterion of synchronic and diachronic identity for persons? Which properties are essential or accidental to persons? These questions have led me to an interest in issues that both pertain to and go beyond the study on the general notion of identity—such as the nature of consciousness, first person perspective, mereological coincidence, ontological hierarchy, animal mind, and ethics of human abortion.
My other ongoing research interests focus around metaethical issues including the connection between non-cognitive evaluative attitudes and moral properties and the possibility of moral realism that accepts the mind-dependence of morality.

Book (in Japanese)

Articles (in Japanese)

  • 2022, “Fake News in COVID-19 Pandemic and Its Epistemological Predicament”, in Institute for Social Ethics, Nanzan University (ed.), Shakai to Rinri 37.

  • 2020, Review of Hirehuse Onnatachi: Misogyny no Ronri (Japanese Translation of Down Girl: The Logic of Misogyny written by Kate Manne, translated by Yoshinori Ogawa, Keio University Press, 2019), Association for Science and Philosophy (ed.), Journal of Science and Philosophy 3, 49–66

  • 2019, “Towards Conceptualist Realism: Identity Primitivism and Sortalist Absolutism of Identity Reconciled”, The Kansai Philosophical Association (ed.), Arche 27, 147–159

Articles (in English)

  • forthcoming, “Sortal Concepts and Conceptions in Constitutionalism”, in Proceedings of the XXIV World Congress of Philosophy

  • 2019, “Explications and Implications of Epistemological Sortalism”, in K. Murakami J. Cresswell, T. Kono, and T. Zittoun (ed.), The Ethos of Theorizing: ISTP 2017, Ontario: Captus University Publications, 61–69

  • 2019, “Non-Cognitivism, Shapelessness, and Disentanglement: The Semantics of Thick Terms”, in The Japanese Society for Ethics (ed.), Special Issue of the Annals of Ethics 2019, 101–117



  • 2018, Shinzo Koizumi Memorial Scholarship, Keio University

  • 2017, Watsuji Prize (Essay Division), The Japanese Society for Ethics


  • 2021 - Present, Young Researchers' Exchange Program Between Japan and Switzerland 2020, ETH Zurich

  • 2020 - Present, Grant-in-Aid for JSPS Fellows, Japan Society for the Promotion of Science (JSPS)

  • 2019 - 2021, Ishimoto Grant for Young Researchers, Philosophy of Science Society, Japan

  • 2018, Yamanami Books Grant for Exploratory Research, Yamanami Books

  • 2018, Ishimoto Travel Grant for Attending International Conference, Philosophy of Science Society, Japan

  • 2018, Hayashi Grant for Young Researchers, The Philosophical Association of Japan

  • 2018, Graduate School Doctoral Student Aid Program (Quota for Recommendation of Graduate School), Keio University

  • 2015 - 2018, Grant-in-Aid for JSPS Fellows, Japan Society for the Promotion of Science (JSPS)

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