Yphtach Lelkes

Yphtach Lelkes is Associate Professor of Communication; Co-Director, Polarization Research Lab; and Co-Director, Center for Information Networks and Democracy at the Anneberg School for Communication at the University of Pennsylvania.

Professor Lelkes is an expert in political communication and political psychology whose research examines affective polarization, political information processing, and the dynamics of political ideology and identities. His work explores how information environments shape political attitudes and behaviors, using survey, field, and natural experiments alongside survey and geospatial data. 

Previously a faculty member at the Amsterdam School of Communication, Professor Lelkes earned a Ph.D. in Communication with a minor in Psychology from Stanford University. 

His research has been published in leading journals across Communication, Political Science, and Psychology, including American Political Science Review, PNAS, Journal of Politics, Nature Human Behavior, and Political Psychology.