Mark Peffley

Mark Peffley is the University Research Professor and Professor of Political Science at the University of Kentucky, directing QIPSR (Quantitative Initiative for Policy and Social Research). He previously served as Co-Editor of Political Behavior. His work focuses on public opinion dynamics, political psychology, and racial justice, particularly examining how perceptions of fairness in criminal justice systems and responses to terrorism shape policy attitudes. Peffley has authored influential books like *Justice in America* (2010), which won the Robert E. Lane Award, and numerous peer-reviewed articles in top journals such as the *American Political Science Review* and *Journal of Politics*.

His research spans U.S. and international contexts, with notable contributions to understanding racial bias in justice systems, the psychological impacts of prolonged terrorism on political tolerance, and media effects on public perceptions. He has been recognized with a 2016 Israeli Institute grant and his work frequently appears in outlets like *Vox* and *Political Violence @ A Glance*. Peffley’s methodological expertise in quantitative social science is central to his leadership at QIPSR, which advances interdisciplinary research in policy and social inquiry.

Key themes in his scholarship include the intersection of race and crime policy, democratic resilience under threat, and the role of social identity in political polarization. His analysis of 'linked fate' perceptions among marginalized groups and the Sullivan Effect in media representation has reshaped discussions on systemic inequality and media responsibility.