What's New
ResourceApril 5, 2026
New Whitepaper: The Complete Guide to Question Bias
We published a new whitepaper: The Complete Guide to Question Bias: 48 Types Every Researcher Must Know.
What It Covers
- 24 question design biases: wording problems, missing data, faulty scales, leading questions, intrusiveness, and inconsistency
- 6 questionnaire design biases: formatting, length, and structural problems
- 18 administration biases: interviewer behavior, respondent psychology, recall errors, and cultural differences
- 16-point bias prevention checklist you can use before launching any study
Source
Based on Choi BCK, Pak AWP. "A Catalog of Biases in Questionnaires." Prev Chronic Dis. 2005. Published by the National Institutes of Health (PMC1323316).
Download
Download it free from the [Whitepapers](/whitepapers) page. No form required.