Discussant, Colloquium on “German Social Science in America: The Interwar Migration and its Legacy,” Harvard University, Cambridge, November 1983.

“Response to Fultner: Habermas on the Lifeworld, Intelligibility, and Conflict Resolution,” American Philosophical Association, December 1996, invited.

“Dialectic and Critique: Response to McCumber,” Society for Phenomenology and Existential Philosophy (SPEP), Penn State University, October 2000, invited.

“Thompson, Participatory Parity and Self-Realization,” Session on “Inclusion, Identity, and the Politics of Recognition,” Committee on the Political Economy of the Good Society, American Political Science Association, Boston, August 2008, invited.

“Response to Baynes, de Laurentiis, & Hicks,” Global Justice Session, Group Meeting of the Hegel Society of America, December 2008, invited.

“Response to Mowad, ‘History and Critique in Hegel and Habermas,’” American Philosophical Association Central Division Meeting, New Orleans LA, February 2013.

“Militant Democracy, Neoliberalism’s Eclipse and Emergent Populism,” International Society for the Study of European Ideas, University of Zaragoza Spain, July 2019.