Numbers, Facts and Trends Shaping Your World

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    Appendix

    In recent years, Pew Research Center has transitioned from probability-based telephone surveys to the American Trends Panel, a probability-based online panel. The transition from phone surveys conducted with an interviewer to online self-administered surveys brings with it the possibility of mode differences – differences arising from the method of interviewing. This appendix includes opinion measures […]

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    Methodology

    The American Trends Panel survey methodology 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 both […]