Phone vs. online surveys: Why do respondents’ answers sometimes differ by mode?
Pew Research Center conducts surveys over the phone and, increasingly, online. But these two formats don’t always produce identical results.
Publications
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How highly religious Americans view evolution depends on how they’re asked about it
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Why we studied the possible links between religion and happiness, health and civic engagement
Conrad Hackett, associate director for research and senior demographer, discusses why we studied the relationship between religion and happiness, health and civic engagement.
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How highly religious Americans view evolution depends on how they’re asked about it
Evolution remains a contentious issue. When asked about it, highly religious Americans’ responses can vary depending on how the question is asked.
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The Evolution of Pew Research Center’s Survey Questions About the Origins and Development of Life on Earth
Measuring public opinion on evolution has never been an easy task for survey researchers.
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Darwin in America
Almost 160 years after Charles Darwin publicized his groundbreaking theory on the development of life, Americans are still arguing about evolution. In spite of the fact that evolutionary theory is accepted by all but a small number of scientists, it continues to be rejected by many Americans.
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Smartphone Ownership Is Growing Rapidly Around the World, but Not Always Equally
Whether in advanced or emerging economies, younger people, those with higher levels of education and those with higher incomes are more likely to be digitally connected.
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Explore unauthorized immigration by state using our new interactive
Unauthorized immigrants make up a quarter of all U.S. foreign-born residents. Our new interactive offers data on unauthorized immigrants by state.
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U.S. unauthorized immigrant population estimates by state, 2016
Pew Research Center estimates that 10.7 million unauthorized immigrants, the lowest level in a decade, lived in the U.S. in 2016
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Republicans and Democrats have grown further apart on what the nation’s top priorities should be
Partisans have moved apart not just in political values and approaches to addressing issues, but also on the issues they identify as top priorities.
