Elements of Adaptive Testing ITEM SELECTION AND ABILITY ESTIMATION Item Selection and Ability Estimation in Adaptive Testing Constrained Adaptive Testing with Shadow Tests Principles of Multidimensional Adaptive Testing Multidimensional Adaptive Testing with Kullback#x2013;Leibler Information Item Selection Sequencing an Adaptive Test Battery APPLICATIONS IN LARGE SCALE TESTING PROGRAMS Adaptive Tests for Measuring Anxiety and Depression MATHCAT: A Flexible Testing System in Mathematics Education for Adults Implementing the Graduate Management Admission Test Computerized Adaptive Test Designing and Implementing a Multistage Adaptive Test: The Uniform CPA Exam A Japanese Adaptive Test of English as a Foreign Language: Developmental and Operational Aspects ITEM POOL DEVELOPMENT AND MAINTENANCE Innovative Items for Computerized Testing Designing Item Pools for Adaptive Testing Assembling an Inventory of Multistage Adaptive Testing Systems ITEM CALIBRATION AND MODEL FIT Item Parameter Estimation and Item Fit Analysis Estimation of the Parameters in an Item Cloning Model for Adaptive Testing Detecting Person Misfit in Adaptive Testing The Investigation of Differential Item Functioning in Adaptive Tests MULTISTAGE AND MASTERY TESTING Multistage Testing: Issues Designs and Research Three Category Adaptive Classification Testing Testlet Based Adaptive Mastery Testing Adaptive Mastery Testing Using a Multidimensional IRT Model. The arrival of the computer in educational and psychological testing has led to the current popularity of adaptive testing a testing format in which the computer uses statistical information about the test items to automatically adapt their selection to a real time update of the test taker’s ability estimate. This book covers such key features of adaptive testing as item selection and ability estimation adaptive testing with multidimensional abilities sequencing adaptive test batteries multistage adaptive testing item pool design and maintenance estimation of item and item family parameters item and person fit as well as adaptive mastery and classification testing. It also shows how these features are used in the daily operations of several large scale adaptive testing programs. Wim J. van der Linden is Chief Research Scientist at CTB McGraw Hill Monterey CA. His specialization is psychometric theory and methods and he has been an active researcher of adaptive testing throughout his career. For Springer he wrote Linear Models for Optimal Test Design (2005) and co edited Handbook of Modern Item ResponseTheory (1997). He is a past president of the Psychometric Society and recipient of lifetime achievement awards from the National Council for Measurement in Education (NCME) and the Association of Test Publishers (ATP). Cees A. W. Glas is Professor of Social Science Research Methodology University of Twente the Netherlands. His specialization is psychometric theory and methods with an emphasis on item response theory adaptive testing model fit analysis and missing data. Professor Glas is a co author of Educational Evaluation Assessment and Monitoring (Swets & Zetlinger 2003). Currently he is a member of the Editorial Board of Psychometrika and serves as a technical consultant to the OECD programs for international student assessment (PISA) and the assessment of adult competencies (PIAAC).