The Reduced Reparameterized Unified Model (Reduced RUM) is a diagnostic classification model for educational assessment that has received considerable attention among psychometricians. However, the computational options for researchers and practitioners who wish to use the Reduced RUM in their work, but do not feel comfortable writing their own…

After a test is developed, most content validation analyses shift from ascertaining domain definition to studying domain representation and relevance because the domain is assumed to be set once a test exists. We present an approach that allows for the examination of alternative domain structures based on extant test items. In our example based on…

A major challenge that decisions makers face in multi-national organizations is how to compare managers from different parts of the globe. This challenge is both psychometric and practical. We draw on the cross-cultural psychology literature to propose a three-step framework to compare personality data from different countries. The first step…