A behind-the-scenes blog about research methods at Pew Research Center. For our latest findings, visit pewresearch.org. One reality of the polling world is item nonresponse — that is, when survey ...

The CAGE questionnaire is a series of four questions that doctors can use to check for signs of possible alcohol dependency. The questions are designed to be less obtrusive than directly asking ...

In 1886, Antoinette Faure, the daughter of the future French President Félix Faure, asked her childhood friend Marcel Proust to fill out a questionnaire in a book titled “Confessions. An Album to ...