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.

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

Government Hits Reset on Student Loan Defaults, But Many Could Experience Default Again

Online Survey Length – How Long is Too Long? – Brookmark

Poll: What Americans think about abortion, in 3 charts - Vox

A short intro to linear regression analysis using survey data, by Brad Jones, Pew Research Center: Decoded

How to Do Market Research: A Guide and Template

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

tops among teens, Facebook lags: Study reveals

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

What is a good survey length for online research?

20 stats that will change the way you survey your customers

Hungary is the only country, from a group of 23 polled by Pew Research Center this year, where a majority of the population has a negative view of the USA : r/europe

Assessing different survey measurement approaches for news consumption