ARRT prides itself on being a mission-driven and evidence-based decision maker.
A critical part of developing and maintaining high quality examinations involves
active participation in, and critical review of, research that is relevant to developing
and maintaining high-quality certification and registration programs. Conducting research is beneficial
both to ARRT as well as to the professional community. The research that ARRT has
done in equating low-volume exams has benefitted other credentialing organizations,
and the results of applied research studies serve to directly inform the decision
making processes at ARRT. For example, each ARRT certification and registration program is based
upon a practice analysis study.
ARRT also supports the efforts of other individuals and organizations doing research
on the profession by providing mailing lists for surveying samples of Registered
Technologists. The samples may be stratified based upon any of the demographic factors
that ARRT collects through its annual certification and registration process. Researchers must submit
a formal research proposal for review and approval prior to requesting a mailing
list. Submit proposals to the ARRT Executive Director, 1255 Northland Drive, St.
Paul, MN 55120. Call (651) 687-0048, ext. 3122, for more information.
University of Minnesota/NCI Research
One study of particular note is the
Radiologic Technologist Health Study
being conducted by the University of Minnesota School of Public Health and the National
Cancer Institute (NCI) in collaboration with the ARRT. This longitudinal study,
initiated in 1982, is a cohort study of potential radiation-related health effects
among radiologic technologists. Articles based upon this project may be found at
The Magic Number: A Look at What Goes Into an ARRT Scaled Score of 75
Download the presentation that ARRT staff gave at the 2012 ASRT Educational
Symposium. This presentation briefly outlines ARRT's exam development process, how
ARRT updates its certification and registration exams to reflect current practice, and the basic
mathematic ideas behind scaled scores (without equations).
SDMS CE Webinar 2014: Life Hacks for Writing Better Classroom Assessment Questions
Download this testwiseness quiz and this test item writing quicksheet as supplemental materials for the SDMS webinar given by ARRT in July 2014.
Tables from "Rasch Scale Drift over Time: Examining When to Reset the Scale."
Tables of means from all conditions of the scale drift simulation study by Babcock
and Albano, which were too large to place in the study paper, are available here.