International Social Ontology Society (ISOS)



ISOS is an association with the purpose of advancing and promoting studies and research in the field of social ontology and related disciplines. It aims to further connect scholars working on topics related to social ontology, and to circulate relevant information amongst members of the academic communities worldwide.

ISOS supports the organization of the biennial Conferences on Collective Intentionality, the biennial ENSO workshops, and related conferences and workshops. In addition, ISOS assists its members in the preparation and organization of research projects, and promotes the publication and circulation of research pertaining to the domain of social ontology and neighboring fields.

The Constitution of ISOS in English and German.


ISOS officers

President: Kirk Ludwig, Professor of Philosophy and Cognitive Science, Indiana University, USA

Vice-President: Frank Hindriks, Professor (adj) in Ethics, Social, and Political Philosophy, University College Groningen, Netherlands

Honorary President: Raimo Tuomela, Professor Emeritus in Practical Philosophy, University of Helsinki, Finland


ISOS steering committee

Sara Rachel Chant, Lecturer, Tulane University, Louisiana USA

Brian Epstein, Associate Professor of Philosophy, Tufts University, Massachusetts USA

Joseph Kisolo-Ssonko, Teaching Associate in Philosophy, University of Nottingham, UK

Arto Laitinen, Professor of Social Philosophy, University of Tampere, Finland

Elisabeth Pacherie, CNRS Senior Researcher in Philosophy, Institut Jean Nicod, Paris, France

Hans-Bernhard Schmid, Professor, Chair for Social and Political Philosophy, University of Vienna, Austria

David Schweikard, Junior Professor of Philosophy, Europe-University of Flensburg, Germany