Dan Sperber is a French social and cognitive scientist and philosopher. His most influential work has been in the fields of cognitive anthropology, linguistic pragmatics, psychology of reasoning, and philosophy of the social sciences. He has developed: an approach to cultural evolution known as the epidemiology of representations or cultural attraction theory as part of a naturalistic reconceptualization of the social; relevance theory; the argumentative theory of reasoning. Sperber formerly Directeur de Recherche at the Centre National de la Recherche Scientifique is Professor in the Departments of Cognitive Science and of Philosophy at the Central European University in Budapest.

Deirdre Susan Moir Wilson, FBA is a British linguist and cognitive scientist. She is emeritus professor of Linguistics at University College London and research professor at the Centre for the Study of Mind in Nature at the University of Oslo. Her most influential work has been in linguistic pragmatics—specifically in the development of Relevance Theory with French anthropologist Dan Sperber. This work has been especially influential in the Philosophy of Language. Important influences on Wilson are Noam Chomsky, Jerry Fodor, and Paul Grice. Linguists and philosophers of language who have been students of Wilson include Stephen Neale, Robyn Carston and Tim Wharton.