Public Opinion: Measuring the American Mind provides an in-depth look at the history and future of polling, including how public opinion is measured, how it is used and misused, and how to critically evaluate public opinion data. This new edition incorporates a new theme of political polarization and examines how mass media and social media help to shape public opinion. It also provides in-depth coverage of public opinion on such issues as political ideology, health care, race, and foreign policy, as well as an update and discussion of the major changes that have taken place on controversial issues such as gay marriage, gun control, and immigration.