Mario Macis, PhD

  • Professor
    Johns Hopkins Berman Institute of Bioethics
  • Professor
    Johns Hopkins Carey Business School

Mario Macis is a Professor of Economics at the Johns Hopkins Carey Business School. He is also a Research Associate at the National Bureau of Economic Research (NBER) and part of the Leadership Team at the Hopkins Business of Health Initiative.

Dr. Macis’ primary focus is on understanding the factors that influence people’s support for markets and market-based solutions to social problems, attitudes toward regulation and technology, and the impact of these elements on economic and social outcomes. Although his research is primarily in economics, much of his work is interdisciplinary. Dr. Macis has published in leading academic journals, including the American Economic Review, the American Economic Journal: Applied Economics, the American Economic Journal: Economic Policy, the Journal of Labor Economics, the Journal of Health Economics, the Journal of Development Economics, Management Science, Sociological Science, and Science.

Dr. Macis has been a consultant for the World Bank, the International Labor Organization, the National Marrow Donor Program, and the United Nations Development Program. In 2021-2022, he served on a National Academies of Sciences, Engineering, and Medicine committee on A Fairier and More Equitable, Cost-Effective, and Transparent System of Donor Organ Procurement, Allocation, and Distribution.

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  • National Institutes of Health (NIH) “Creative and Novel Ideas in HIV Research (CNIHR) grant for “Behavioral nudges, information and incentives for HIV testing: A field experiment in Ecuador”, 2016-18.
  • Johns Hopkins University Discovery Award, 2016.
  • Johns Hopkins University early-career Catalyst Award, 2015.
  • Johns Hopkins University Alumni Association Excellence in Teaching Award, 2013.
  • National Science Foundation (NSF) Grant for “Field Experiments on Incentives and Blood Donations”, 2009-12.

Research Interests

  • Prosocial behavior
  • Intrinsic and Extrinsic Motivation
  • Morally Controversial Transactions
  • Global Health
  • Experimental Economics
  • Development Economics
  • Labor and Human Resources Economic


  • Ph.D., University of Chicago

Recent Publications

  • Elías J, Lacetera N, Macis M. Paying for Kidneys? A Randomized Survey and Choice Experiment. American Economic Review [Internet]. [cited 2019 May 10];
  • Elías J, Lacetera N, Macis M. The Economic and Moral Foundations of Americans’ Attitudes toward Paying Kidney Donors, Cato Institute Research Brief in Economic Policy No. 172, 17 July 2019.
  • Lacetera N, Macis M. Societal Support for Paying Plasma Donors in Canada, Cato Institute Research Brief in Economic Policy No. 127, 22 August 2018 (with Nicola Lacetera).
  • Exports and Wages: Rent Sharing, Workforce Composition or Returns to Skills? Journal of Labor Economics, October 2016 (with Fabiano Schivardi)
  • Rewarding Volunteers: A Field Experiment, Management Science, 2014, 60(5), pp. 1107-1129 (with Nicola Lacetera and Robert Slonim)
  • Economic Rewards to Motivate Blood Donations, Science, 24 May 2013, Vol. 340: 927-928 (with Nicola Lacetera and Robert Slonim)
  • Removing Financial Barriers To Organ and Bone Marrow Donation: The Effect Of Leave And Tax Legislation In The US, Journal of Health Economics, 2014, 33, pp. 43-56. (with Nicola Lacetera and Sarah Stith)
  • Will There Be Blood? Incentives and Displacement Effects in Pro-Social Behavior, American Economic Journal: Economic Policy, 2012, 4 (1): 186-223 (with Nicola Lacetera and Robert Slonim)
  • Do Unemployment Benefits Promote or Hinder Job Reallocation?, Journal of Development Economics 2010, 93: 109-125 (with Tito Boeri)