Fellow, Centre for Advanced Study at the Norwegian Academy of Science and Letters, 2011-2012.
Visiting Scholar, Cognitive Science, UCSD, 2009-2010.
Faculty, Sixty-Fifth LSA Linguistic Institute. Berkeley, July 2009.
Fellow, Institute of Advanced Study, Durham University. Fall 2008.
Fellow, Institute for the Science of Origins, 2008- .
Extraordinary Member, Humanwissenschaftliches Zentrum der Ludwig-Maximilians-Universität, München. 2007 - .
Research Associate, Cultural Anthropology, Cleveland Museum of Natural History, 2004 - 2008.
Founding President, Myrifield Institute for Cognition and the Arts, 2007 - .
Member, Advisory Board, Center for Cost-Effective Consumerism, 2007 - .
Visiting Professor, Collège de France, June 2000.
Fellow, Center for Advanced Study in the Behavioral Sciences, 1994-1995 and 2001-2002.
Member, School of Social Science, Institute for Advanced Study, Princeton, 1996-1997.
Fellow, John Simon Guggenheim Memorial Foundation, 1992-1993.
Fellow, National Humanities Center, 1989-1990.
Fellow, National Endowment for the Humanities, 1986-1987.
Distinguished Fellow, New England Institute for Cognitive Science and Evolutionary Psychology, 2001 -
Visiting Professor, International Graduate School in Language and Communication, August 2000.
Visiting Scholar, Linguistics, Stanford University, 1999-2000.
External Research Professor, Krasnow Institute for Advanced Study, 1997 - .
Distinguished University Professor, The University of Maryland, with affiliations in the Department of English Language and Literature and the Doctoral Program in Neuroscience and Cognitive Science.
Associate Director, Center for Advanced Study in the Behavioral Sciences.