Every few months, Indian media headlines loudly proclaim that “Modi is the world’s most popular leader,” citing approval ratings from an American firm called Morning Consult. The moment such surveys ...

A new study published in Nature Communications finds that worldwide, people with higher levels of education are more ...

A study published in the journal Cell provides the clearest evidence to date that people infected with influenza actively ...

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Sampling (or sample) bias is a widespread concern in scientific research, across several disciplines. The concept of sampling bias originated in statistical studies. The consequence of a biased sample ...

Abstract: The problem of sequential anomaly identification is considered, where multiple data sources are simultaneously monitored and the goal is to identify in real time those, if any, that exhibit ...

People often have their decisions influenced by rare outcomes, such as buying a lottery and believing they will win, or not buying a product because of a few negative reviews. Previous research has ...

Abstract: This paper proposes an adaptive grid sampling strategy based on reconstruction bias constraint for efficient and accurate measurement of free-form surfaces. The method first obtains initial ...

A behind-the-scenes blog about research methods at Pew Research Center. For our latest findings, visit pewresearch.org. Every survey finding published by Pew Research ...