William S. Horton (Sid) is an Associate Professor in the Department of Psychology at Northwestern University , where he has taught since 2005 and directed the Cognition and Communication Lab (Cresap 108). Starting in September 2025, he will serve as Chair of the Department of Linguistics . His research focuses on socio-cognitive mechanisms in language use, particularly discourse pragmatics , perspective-taking , and non-literal language processing . Education: B.S. in Psychology/German from Duke University (1991), M.A. and Ph.D. in Cognitive Psychology from University of Chicago (1994/1999) Previous roles: Postdoctoral research at SUNY-Stony Brook, Cognitive Aging at Georgia Tech Research trends from his 20+ years of publications include common ground , memory processes , figurative language , and age-related communication changes . His work increasingly incorporates computational text analysis and real-time digital communication studies. Awards : Fellow, Society for Text and Discourse Students : Supervised Ph.D. theses on conversational alignment, common ground activation, and digital communication. Undergraduate honors projects explore inhibitory deficits, speech internalization, and perspective-taking in bilingualism. Cognition and Communication Lab investigates language processing in spoken/written contexts using experimental methods and computational models.











