Team directory

Becca Levy, Professor of Public Health (Social and Behavioral Sciences) and Psychology; Affiliated Faculty, Yale Institute for Global Health

Dr. Levy’s research explores psychosocial factors that influence older individuals’ cognitive and physical functioning, as well as their longevity. She is credited with creating a field of study that focuses on how positive and negative age stereotypes, which are assimilated from the culture, can have beneficial and adverse effects, respectively, on the health of older individuals.Her studies have been conducted by longitudinal, experimental, and cross-cultural methods.

Julia Lin, ISPS Director's Fellow 2025

Julia Lin is a junior in Silliman College majoring in Sociology on the intensive track. She is interested in workforce, labor, and immigration policy. In the past, she has interned for the Employment and Training Administration at the U.S. Department of Labor and has held roles with the Yale Program on Climate Change Communication and Rank the Vote. On campus, she is a Research Assistant for Professor DeLuca and a counselor for the Yale & You program. During her time at Yale, she has served on the board of Yale Votes: A Student Initiative and the Rural Students Alliance at Yale.

Zachary Liscow,

Zachary Liscow is Professor of Law at Yale Law School. His wide-ranging work in law and economics currently covers tax policy, benefit-cost analysis, and infrastructure construction costs. He is particularly interested in developing cost-effective policies to address inequality and understanding what drives the high costs of building U.S. infrastructure. He has also worked in a variety of other areas, including environmental policy and empirical legal studies.

Zhouyan Liu, ISPS Graduate Policy Fellow 2025

Zhouyan Liu is a Ph.D. student in the Department of Political Science. His research interests include authoritarian politics and historical political economy. He is currently working on a project concerning diasporas from authoritarian countries and the political consequences of migration in both sending and receiving countries, with a particular focus on China as an empirical case. Prior to attending Yale, he worked as an investigative journalist for four years at one of China’s largest news magazines, Sanlian Life Weekly. He received his B.A. from Peking University and M.P.P.

Mackenzie Lockhart, Postdoctoral Associate

Mackenzie Lockhart is a Postdoctoral Associate with the Democratic Innovations program at Yale’s Institution for Social and Policy Studies. He received a Ph.D. in political science from the University of California, San Diego in 2023. His research focuses on elections, representation, and public opinion with particular focus on how voters behave in American elections and consequences for representation.

Isabela Mares, Arnold Wolfers Professor of Political Science

Isabela Mares is the Arnold Wolfers Professor of Political Science and the Director of the European Union Center at Yale. She specializes in the comparative politics of Europe. Professor Mares has written extensively on labor market and social policy reforms, the political economy of taxation, electoral clientelism, reforms limiting electoral corruption. Her current research examines the political responses to antiparliamentarism in both contemporary and historical settings.

Carolina Marques de Mesquita , ISPS Graduate Policy Fellow 2025

Carolina is a third year PhD student in the Department of Political Science. Her research explores environmental politics, social movements, and political culture with a focus on the US and Brazil. Through the ISPS Graduate Policy Fellowship, she will investigate the rise of youth-led climate change litigation. Prior to attending Yale, Carolina worked in the nonprofit sector and taught English through the Fulbright US Student Program in Portugal.

David Mayhew, Sterling Professor of Political Science, Emeritus

David Mayhew is Sterling Professor Emeritus of Political Science.

Tracey Meares, Walton Hale Hamilton Professor of Law and Founding Director of The Justice Collaboratory

Tracey L. Meares is the Walton Hale Hamilton Professor and a Founding Director of the Justice Collaboratory at Yale Law School. Before joining the faculty at Yale, she was a professor at the University of Chicago Law School from 1995 to 2007, serving as Max Pam Professor and Director of the Center for Studies in Criminal Justice. She was the first African American woman to be granted tenure at both law schools.

Costas Meghir, Douglas A. Warner III Professor of Economics and Professor of Management

Costas Meghir is the Douglas A. Warner III Professor of Economics at Yale University. He obtained his Ph.D. from Manchester University. He is a Member of the American Academy of Arts and Sciences, Fellow of the Econometric Society, Fellow of the British Academy, and Fellow of the Society for Labor Economics. He was awarded the Ragnar Frisch medal by the Econometric Society in 2000 and the Bodosakis Foundation prize in 1997. He has been co-editor of Econometrica and joint managing editor of the Economic Journal.