A behind-the-scenes blog about research methods at Pew Research Center. For our latest findings, visit pewresearch.org. (Pew Research Center illustration; photos by Rasid Necati Aslim/Anadolu, Pawel ...
A number of data quality checks have been developed for online surveys. Examples include flagging respondents who fail an attention check (or trap) question, complete the survey too quickly (speeders) ...
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