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Testlet Response Theory and Its Applications

Howard Wainer author Xiaohui Wang author Eric T Bradlow author

Format:Paperback

Publisher:Cambridge University Press

Published:19th Mar '07

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Testlet Response Theory and Its Applications cover

The first comprehensive description of a scoring model for tests composed of smaller tests focusing on narrow topics.

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.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.

'… a very accessible and incredibly delightful book to read. … an excellent resource … a valuable addition to the bookshelves of teachers, students and researchers in testing and measurement.' Psychometrika

ISBN: 9780521681261

Dimensions: 229mm x 154mm x 12mm

Weight: 382g

280 pages