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…

Educational assessment and, more broadly, educational research in the United States have entered into an era characterized by a dramatic increase in the prevalence and importance of test score use in accountability systems. This volume covers a selection of contemporary issues about testing science and practice that impact the nation's public…

The first edition of this book was written to give information about testing to people whose work gave them access to test results, but whose training included little or nothing about the use and interpretation of tests. Later editions have been intended for a broader audience as the need for understanding what test scores really mean has…

This package contains the Learning Disabilities Diagnostic Inventory (LDDI) and the LDDI examiner's manual. The LDDI is intended to help identify intrinsic processing disorders in children and adolescents. Items represent specific observable behaviors associated with learning disability (LD) in listening, speaking, reading, writing, mathematics,…