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This website describes the work of Hahrie Han and the P3 Research Lab. The P3 lab seeks to make the participation of ordinary people Possible, Probable, and Powerful. The lab is led by faculty director Hahrie Han, a political scientist at Johns Hopkins University, where she is Inaugural Director of the SNF Agora Institute. Using observational and experimental methods, Hahrie and the P3 team study civic and political engagement, collective action, organizing, and democratic revitalization. Lab research has appeared in the American Political Science Review, American Sociological Review, American Journal of Sociology, and other journals. Hahrie has published four books. 

PRISMS OF THE PEOPLE:
Power & Organizing in Twenty-First-Century America
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HOW ORGANIZATIONS DEVELOP ACTIVISTS:
Civic Associations & Leadership in the 21st Century
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GROUNDBREAKERS:
How Obama's 2.2 Million Volunteers Transformed Campaigning in America
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MOVED TO ACTION:
Motivation, Participation, and Inequality in American Politics
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