Experimental evidence that changing beliefs about mask efficacy and social norms increase mask wearing for COVID-19 risk reduction: Results from the United States and Italy

• Scott E. Bokemper,

  Roles Conceptualization, Investigation, Writing – original draft, Writing – review & editing

  Affiliations Institution for Social and Policy Studies, Yale University, New Haven, Connecticut, United States of America, Center for the Study of American Politics, Yale University, New Haven, Connecticut, United States of America

  https://orcid.org/0000-0002-9754-4658

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• Maria Cucciniello,

  Roles Conceptualization, Investigation, Writing – original draft, Writing – review & editing

  Affiliations Business School, University of Edinburgh, Edinburgh, United Kingdom, Dondena Centre for Research on Social Dynamics and Public Policies, Bocconi University, Milan, Italy

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• Tiziano Rotesi,

  Roles Conceptualization, Investigation, Writing – original draft, Writing – review & editing

  Affiliation Department of Economics, University of Lausanne, Lausanne, Switzerland

  https://orcid.org/0000-0001-6607-0456

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• Paolo Pin,

  Roles Conceptualization, Funding acquisition, Investigation, Writing – original draft, Writing – review & editing

  Affiliations Department of Economics and Statistics, Università di Siena, Siena, Italy, Bocconi Institute for Data Science and Analytics (BIDSA), Bocconi University, Milan, Italy

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• Amyn A. Malik,

  Roles Conceptualization, Writing – review & editing

  Affiliations Yale Institute for Global Health, New Haven, Connecticut, United States of America, Yale School of Medicine, New Haven, Connecticut, United States of America

  https://orcid.org/0000-0003-4875-9916

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• Kathryn Willebrand,

  Roles Conceptualization, Writing – review & editing

  Affiliations Yale Institute for Global Health, New Haven, Connecticut, United States of America, Yale School of Public Health, New Haven, Connecticut, United States of America

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• Elliott E. Paintsil,

  Roles Conceptualization, Writing – review & editing

  Affiliations Yale Institute for Global Health, New Haven, Connecticut, United States of America, Institution of Human Nutrition, Columbia University, New York City, New York, United States of America

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• Saad B. Omer,

  Roles Conceptualization, Funding acquisition, Writing – review & editing

  Affiliations Yale Institute for Global Health, New Haven, Connecticut, United States of America, Yale School of Medicine, New Haven, Connecticut, United States of America, Yale School of Public Health, New Haven, Connecticut, United States of America, Yale School of Nursing, Orange, Connecticut, United States of America

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• Gregory A. Huber ,

  Roles Conceptualization, Funding acquisition, Investigation, Writing – original draft, Writing – review & editing

  * E-mail: gregory.huber@yale.edu

  Affiliations Institution for Social and Policy Studies, Yale University, New Haven, Connecticut, United States of America, Department of Political Science, Yale University, New Haven, Connecticut, United States of America

  https://orcid.org/0000-0001-6804-8148

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• Alessia Melegaro

  Roles Conceptualization, Funding acquisition, Investigation, Writing – review & editing

  Affiliations Dondena Centre for Research on Social Dynamics and Public Policies, Bocconi University, Milan, Italy, Social and Political Science Department, Bocconi University, Milan, Italy

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