Authors:Howard Wainer, Eric T. Bradlow, Xiaohui Wang,
Publisher: Cambridge University Press
Keywords: applications, theory, response, testlet
Number of Pages: 280
Published: 2007-03-19
List price: $38.99
ISBN-10: 052168126X
ISBN-13: 9780521681261

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 off

Authors:Howard Wainer, Eric T. Bradlow, Xiaohui Wang,
Publisher: Cambridge University Press
Keywords: applications, theory, response, testlet
Number of Pages: 280
Published: 2007-03-19
List price: $101.99
ISBN-10: 0521862728
ISBN-13: 9780521862721

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 off

Author: Han Bao
Publisher: VDM Verlag
Keywords: item, response, testlet, model, application, cancellation, function, amplification, differential
Number of Pages: 176
Published: 2009-06-07
List price: $96.00
ISBN-10: 3639165497
ISBN-13: 9783639165494

Many educational tests use testlets as a way of providing context. When testlet effect and item idiosyncratic features of individual items are both considered to be the reasons of DIF in many educational tests using testlets, it is interesting to investigate the phenomena of DIF amplification and cancellation resulting from the interactive effects of these two factors. This research presented a study based on a multiple-group testlet item response theory model to examine in detail different situations of DIF amplification and cancellation at the item and testlet level us