For example, in one of Pew Research Center’s questions about abortion, half of the sample is asked whether abortion should be “legal in all cases, legal in most cases, illegal in most cases, illegal ...

“Quota Controls in Survey Research: A Test of Accuracy and Intersource Reliability in Online Samples.” Journal of Advertising Research 55(4), 368-79. ↩; In the 2016 Pew Research Center study a ...

The value of strong questionnaire design, complemented by the task of high-quality sample development, is not fully appreciated.Too often researchers relegate those two essential building blocks of ...