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    Methodology

    Data in this study came from two main data sources: 1) analysis of Facebook posts from a set of 30 science-related pages based on data downloaded from the public Facebook Graph API from Jan. 1, 2014 to June 30, 2017, and 2) human content analysis coding by Pew Research Center staff of a random selection […]

  • report

    Methodology

    Data in this study came from two main data sources: 1) analysis of Facebook posts from a set of 30 science-related pages based on data downloaded from the public Facebook Graph API from Jan. 1, 2014 to June 30, 2017, and 2) human content analysis coding by Pew Research Center staff of a random selection […]

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    3. Political data in voter files

    Among the most important data on the voter files for the election analyst are the records for whether or not someone is registered to vote and whether they voted in a given election. These individual registration and turnout records come directly from records kept by each state for every election. The turnout record indicates whether […]

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    Methodology

    About the Pew Research Center’s Spring 2017 Global Attitudes Survey Results for the survey are based on face-to-face interviews conducted under the direction of D3 Systems, Inc. and ORB International. The results are based on national samples, unless otherwise noted. More details about our international survey methodology and country-specific sample designs are available here. Detailed […]

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    Appendix A: Survey methodology

    This study, sponsored by Pew Research Center, used online opt-in survey data collected by three commercial vendors. Each vendor provided their own sample and administered the survey themselves, based on a common questionnaire. While no vendor makes the claim that that these are probability-based samples, they are intended to represent the noninstitutionalized U.S. adult population, […]

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    Methodology

    About the Pew Research Center’s Spring 2017 Global Attitudes Survey Results for the survey are based on telephone and face-to-face interviews conducted under the direction of D3 Systems, Inc., ORB International, Princeton Survey Research Associates International, Kantar Public UK and Voices! Research & Consultancy. The results are based on national samples, unless otherwise noted. More […]