Before working with the United States Institute of Peace, Stephan worked at the United States Department of State where she was the lead foreign affairs officer for the Bureau of Conflict and Stabilization Operations,[3] and at NATO headquarters.[2]
Together with Erica Chenoweth, Stephan wrote the 2010 book Why Civil Resistance Works: The Strategic Logic of Nonviolent Conflict. The book studies the success rates of civil resistance efforts from 1900 to 2006, focusing on the major violent and nonviolent efforts to bring about regime change during that time.[4] By comparing the success rates of 323 violent and nonviolent campaigns, Stephan and Chenoweth demonstrate that only 26% of violent revolutions were successful, whereas 53% of nonviolent campaigns were successful.[4][5] Of the 25 largest movements they studied, 20 were nonviolent, and they found that nonviolent movements attracted four times as many participants on average than violent movements.[4] They also demonstrated that nonviolent movements tended to precede the development of more democratic regimes than violent movements.[6][7]
The authors coined a rule about the level of participation necessary for a movement to succeed, called the "3.5% rule": nearly every movement with active participation from at least 3.5% of the population succeeded.[8][9] All of the campaigns that achieved that threshold were nonviolent.[10]
Why Civil Resistance Works won the 2012 Woodrow Wilson Foundation Prize from the American Political Science Association, which is awarded each year for "the best book on government, politics, or international affairs".[11] For Why Civil Resistance Works, Stephan and her coauthor Erica Chenoweth won the 2013 Grawemeyer Award for Ideas Improving World Order.[12] In 2015 Stephan was the recipient of the inaugural Henry J. Leir Human Security Award, which is awarded by Institute for Human Security at Fletcher University for "outstanding Fletcher alumni who have made significant contributions to the scholarship and/or practice of human security".[13][14]
^Rineheart, Jason (1 March 2012). "Erica Chenoweth and Maria J. Stephan. Why Civil Resistance Works: The Strategic Logic of Nonviolent Conflict". Perspectives on Terrorism. 6 (1).
^Kezer, Robert Allen (1 April 2012). "Erica Chenoweth & Maria J. Stephan (2011). Why civil resistance works: The strategic logic of nonviolent conflict. New York: Columbia University Press". Conflict & Communication Online. 11 (1).