Yphtach (Yph) Lelkes is an Assistant Professor at the Annenberg School for Communication.
His main focus is on the role of the political information environment in structuring attitudes, with a special interest in the proliferation of digital media. For instance, he has studied how the Internet has affected polarization, and is currently exploring how increased Internet access changes news seeking behavior and social capital.
Before joining the University of Pennsylvania, he was faculty at the Amsterdam School of Communication. He received his PhD from Stanford University. His research has appeared or is forthcoming in various journals across disciplines, including the American Journal of Political Science, PNAS, the Journal of Politics, the British Journal of Political Science, Public Opinion Quarterly, Journal of Experimental Political Science, Political Psychology, the Journal of Personality and Social Psychology, and the Journal of Experimental Social Psychology.