In the News

What Methods Detect Potentially Biased Items for High-Stakes Testing?

May 12, 2021

All test items should measure the same content similarly for everyone. Furthermore, only people’s ability should determine whether they get an item right. If something other than ability determines this then that item needs to be examined because it implies the item may be potentially biased.

Westat’s Emily Diaz, Ph.D., and coauthors from Ohio University have published a new article in the International Journal of Assessment Tools in Education based on their study of ways to detect potentially biased items:  Detecting Differential Item Functioning: Item Response Theory Methods Versus the Mantel-Haenszel Procedure.

“This study looked at 3 methods under a variety of conditions to determine how often non-biased items were correctly identified as being nonbiased,” notes Dr. Diaz. “Our findings provide insights on the different procedures and error rates.”


Deep Dive with Our Experts

view all news

How can we help?

We welcome messages from job seekers, collaborators, and potential clients and partners.

Get in Contact

Want to work with us?

You’ll be in great company.

Explore Careers
Back to Top