Market research surveys are used to gather information about customers or potential customers for your company. These surveys can help you to make the most profitable decisions about marketing, ...

A behind-the-scenes blog about research methods at Pew Research Center. For our latest findings, visit pewresearch.org. Political scientists often measure the concept of tolerance with a hypothetical ...

In public opinion surveys, the way questions are asked can influence the answers people give. To better understand this phenomenon, pollsters sometimes measure the degree to which different questions ...

When conducting surveys, two kinds of nonresponse may cause incomplete data files: unit nonresponse (complete nonresponse) and item nonresponse (partial nonresponse). The selectivity of the unit ...