How we keep our online surveys from running too long, Pew Research Center

While there is no magic length that an online survey should be, Pew Research Center caps the length of its online American Trends Panel surveys at 15 minutes.

The Role of Lab-Developed Tests in the In Vitro Diagnostics Market

Overview Pew Research Center

Pew survey: tops teens' social-media diet, with roughly a sixth using it almost constantly – KXAN Austin

The Art of Surveys: The Collective Survey Best Practices, by Allison Mui, Product Gals

How we keep our online surveys from running too long, Pew Research Center

Who's left out in a Web-only survey and how it affects results

Methodology Pew Research Center

Pew Research Center on LinkedIn: How we keep our online surveys from running too long

How we keep our online surveys from running too long, Pew Research Center

Labs survey finds privacy concerns, distrust of social media rampant with all age groups