Diagnostic assessment is currently an active research area in educational measurement. Literature related to diagnostic modeling has been in existence for several decades, but a great deal of research has been conducted within the last decade or so, especially within the last five years. The author summarizes the key components in the application…

This comprehensive "Handbook" focuses on the most used polytomous item response theory (IRT) models. These models help us understand the interaction between examinees and test questions where the questions have various response categories. The book reviews all of the major models and includes discussions about how and where the models…

This text prepares students to quantify observations through psychological testing. Measurement is critical in all the subareas of psychology, and the text begins by discussing the applications of testing in the subdisciplines of psychology. The book also discusses the extent to which tests are actually used. Early chapters discuss general…