Is there a way to calculate reliability when items are randomly selected for delivery in a classical test theory (CTT) model? Psychometrician Austin Fossey offers his thoughts.
Phychometrician Austin Fossey looks under the hood to see if the changes in subscores reflect the actual results from the training, and shares his analysis and best practices.
Preserve the validity of your assessments! In this post, Psychometrician Austin Fossey lists 4 ways to identify when a content breach has occurred so that the problem can be remedied through changes to the assessment or disciplinary actions against the parties involved in the breach.