Testlet Response Theory and Its Applications - Hardcover

Wainer, Howard; Bradlow, Eric T.; Wang, Xiaohui

Hardcover

ISBN 10: 0521862728 ISBN 13: 9780521862721

Publisher: Cambridge University Press, 2007

Synopsis

The measurement models employed to score tests have been evolving over the past century from those that focus on the entire test (true score theory) to models that focus on individual test items (item response theory) to models that use small groups of items (testlets) as the fungible unit from which tests are constructed and scored (testlet response theory, or TRT). In this book, the inventors of TRT trace the history of this evolution and explain the character of modern TRT. Written for researchers and professionals in statistics, psychometrics, and educational psychology, the first part offers an accessible introduction to TRT and its applications. The second part presents a comprehensive, self-contained discussion of the model couched within a fully Bayesian framework. Its parameters are estimated using Markov chain Monte Carlo procedures, and the resulting posterior distributions of the parameter estimates yield insights into score stability that were previously unsuspected.

About this title

Book Description:

Modern tests are often composed of a large number of testlets - smaller tests that focus on a narrow topic. Testlet response theory (TRT) is an appropriate scoring model for such tests. This book, written by TRT's inventors, is the first comprehensive description of this theory.

About the Author:

Dr Howard Wainer is a Distinguished Research Scientist for the National Board of Medical Examiners and Adjunct Professor of Statistics at the Wharton School of the University of Pennsylvania.

About this edition

• Publisher: Cambridge University Press
• Publication date: 2007
• ISBN 10: 0521862728
• ISBN 13: 9780521862721
• Binding: Hardcover
• Number of pages: 280