When it comes to getting a lot of information in a short period, a questionnaire may be the answer. Questionnaires contain lists of questions in open-ended or closed-ended formats. While it takes time ...

Objectives: To develop a valid and reliable internet based lifestyle physical activity questionnaire suitable for use among the United Kingdom population. Methods: After a detailed content analysis ...

A behind-the-scenes blog about research methods at Pew Research Center. For our latest findings, visit pewresearch.org. Pew Research Center often conducts surveys around the globe on sensitive topics, ...