Yoshiyuki Yokoro 

I am currently a JSPS postdoctoral fellow at Nanzan University Institute for Social Ethics in Nagoya. I am also an editor-in-chief of Tokyo Academic Review of Books, an online book review journal launched in June 2020.

You can reach me at yokoro.y[at]

横路 佳幸 [researchmap]

現在、学振PDとして名古屋の南山大学社会倫理研究所に所属しています。2020年6月に立ち上げた、学術書の書評専門のオンラインジャーナルTokyo Academic Review of Booksの編集もやっています。


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.


  • 2021, Identity and Individuals: Toward a Unified Theory Based on Sortal Concepts (in Japanese), Keio University Press

Refereed Articles

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

  • 2021, “How to Be an Identity-Relativist about the Trinity” (in Japanese), Society for Philosophy of Religion in Japan (ed.), Studies in the Philosophy of Religion 38, 87–100.

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

Non-refereed Articles

Invited Article

  • 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

Special Issues (in Japanese)

  • 2021, “Evolutionary Debunking Arguments and Humean Constructivism: Critical Examination of Street’s Views”, in Institute for Social Ethics, Nanzan University (ed.), Shakai to Rinri 36.

  • 2021, “Introduction: How Have Morality and Evolution Been Related?”, in Institute for Social Ethics, Nanzan University (ed.), Shakai to Rinri 36.

Book Reviews (in Japanese)

  • 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


Others (in Japanese)



  • 2018, Shinzo Koizumi Memorial Scholarship, Keio University

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


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

  • 2019 - Present, 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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