Numbers, Facts and Trends Shaping Your World

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    Appendix A: Sources of religion data

    This report relies on religion data from several sources. Data on current patterns of religious switching come from Pew Research Center’s American Trends Panel (ATP). Adult religious composition data in the ATP is weighted to results from Pew Research Center’s National Public Opinion Reference Survey (NPORS). Data on patterns of religious transmission between parents and […]

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    Methodology

    The American Trends Panel survey methodology Overview The American Trends Panel (ATP), created by Pew Research Center, is a nationally representative panel of randomly selected U.S. adults. Panelists participate via self-administered web surveys. Panelists who do not have internet access at home are provided with a tablet and wireless internet connection. Interviews are conducted in […]

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    1. How U.S. religious composition has changed in recent decades

    Only a few decades ago, a Christian identity was so common among Americans that it could almost be taken for granted. As recently as the early 1990s, about 90% of U.S. adults identified as Christians. But today, about two-thirds of adults are Christians.[6. numoffset=”6″ This chapter focuses on results of public opinion surveys of U.S. […]

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    Appendix: Does mentioning religious leaders’ support for environmental protection influence respondents’ answers to survey questions about it?

    Pew Research Center conducted an experiment to better understand how religious leaders’ messages might influence their followers’ views on the environment. Using a sample of more than 3,000 U.S. adults that was separate from the main survey, the experiment posed two questions. A third of the respondents were shown the following: As you may know, […]

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    Appendix B: Classifying European political parties

    Classifying parties as populist Although experts generally agree that populist political leaders or parties display high levels of anti-elitism, definitions of populism vary. We use three measures to classify populist parties: anti-elite ratings from the 2019 Chapel Hill Expert Survey (CHES), Norris’ Global Party Survey and The PopuList. We define a party as populist when […]

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    Modeling the Future of Religion in America

    Since the 1990s, large numbers of Americans have left Christianity to join the growing ranks of U.S. adults who describe their religious identity as atheist, agnostic or “nothing in particular.” If recent trends in religious switching continue, Christians could make up less than half of the U.S. population within a few decades.

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