A candidate’s score is determined by all grades received from each examiner, after which it is adjusted for examiner severity and case difficulty using the Multi-Facet Rasch Model (MFRM). The MFRM is a measurement model that can account for some of the factors that influence the outcome of a candidate’s performance on an exam. Learn more here.
The process requires statistical analysis of the grades, resulting in a six-week period post-exam to accurately analyze and then release the results.
ABOG has been using this model successfully since 2021 for both Subspecialty and Specialty Certifying Examinations in order to improve the fairness, reliability, and validity of the certification process.