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

Emily Diaz

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.”

Want to work with us?
You’ll be in great company.

About Us Careers

Westat Employees.
Westat Employee.
AAA Foundation for Traffic Safety
Baltimore Metropolitan Council
Centers for Disease Control and Prevention
Centers for Medicare & Medicaid Services
Chicago Metropolitan Agency for Planning
DC Public Schools
Georgia Department of Transportation
Internal Revenue Service
Leadership Montgomery
Maryland Cancer Registry
Michigan Department of Health and Human Services
National Science Foundation
NYC Mayor’s Office for Economic Opportunity
Organization for Economic Cooperation and Development
Robert Wood Johnson Foundation
SiriusXM
Social Security Administration
Substance Abuse and Mental Health Services Administration
Teach for America
Texas Education Agency
The Johns Hopkins University
The National Institutes of Health
The Verizon Foundation
Toyota
U.S. Department of Agriculture
U.S. Department of Education
U.S. Department of Health and Human Services
U.S. Department of Justice
U.S. Department of Transportation
U.S. Department of Veterans Affairs
University of Maryland Baltimore Campus
University of Michigan
University System of Maryland
Explore Our Clients

Please wait...

Forbes 2021 The Best Employers for Diversity Powered by StatistaForbes 2021: America's Best Midsize Employer Powered by Statista

Westat is an Equal Opportunity Employer and does not discriminate on the basis of race, creed, color, religion, sex, national origin, age, veteran status, disability, marital status, sexual orientation, citizenship status, genetic information, gender identity or expression, or any other protected status under applicable law. Notices to Employees & Applicants.