Shanto Iyengar holds the Chandler Chair in Communication at Stanford University where he is also Professor of Political Science and Director of the Political Communication Laboratory. Iyengar’s areas of expertise include the role of mass media in democratic societies, public opinion, and political psychology. Iyengar’s research has been supported by grants from the National Science Foundation, the National Institutes of Health, the Ford Foundation, the Pew Charitable Trusts, and the Hewlett Foundation. He is the recipient of several professional awards including the Philip Converse Award of the American Political Science Association for the best book in the field of public opinion, the Murray Edelman Lifetime Achievement Award, and the Goldsmith Book Prize from Harvard University. Iyengar is author or co-author of several books, including News That Matters (University of Chicago Press, 1987), Is Anyone Responsible? (University of Chicago Press, 1991), Explorations in Political Psychology (Duke University Press, 1995), Going Negative (Free Press, 1995), and Media Politics: A Citizen’s Guide (Norton, 2011).