1st Edition

D-scoring Method of Measurement Classical and Latent Frameworks

By Dimiter Dimitrov Copyright 2024
    148 Pages 44 B/W Illustrations
    by Routledge

    148 Pages 44 B/W Illustrations
    by Routledge

    D-scoring Method of Measurement presents a unified framework of classical and latent measurement referred to as D-scoring method of measurement (DSM). Provided are detailed descriptions of DSM procedures and illustrative examples of how to apply the DSM in various scenarios of measurement.

    The DSM is designed to combine merits of the traditional CTT and IRT for the purpose of transparency, ease of interpretations, computational simplicity of test scoring and scaling, and practical efficiency, particularly in large-scale assessments. Through detailed descriptions of DSM procedures, this book shows how practical applications of such procedures are facilitated by the inclusion of operationalized guidance for their execution using the computer program DELTA for DSM-based scoring, equating, and item analysis of test data. In doing so, the book shows how DSM procedures can be readily translated into computer source codes for other popular software packages such as R. D-scoring Method of Measurement equips researchers and practitioners in the field of educational and psychological measurement with a comprehensive understanding of the DSM as a unified framework of classical and latent scoring, equating, and psychometric analysis.

    Chapter 1 Classical Test Theory: Basic Concepts and Features Chapter 2 Item Response Theory: Basic Concepts and Features Chapter 3 CTT-IRT: Comparison and Connections Chapter 4 Classical D-scoring Method Chapter 5 Latent D-scoring Method Chapter 6 DSM Test Equating Chapter 7 Item and Person Fit Chapter 8 DSM Testing for Differential Item/Test Functioning Chapter 9 DSM for Polytomous Items Chapter 10 DSM for Standard Setting Chapter 11 DSM for Multistage Testing Chapter 12 DM-IRT Connections Chapter 13 Summary Notes


    Dimiter M. Dimitrov is Professor Emeritus at George Mason University, USA, and Senior Psychometrician at the National Center for Assessment in Riyadh, Saudi Arabia. His areas of expertise include assessment, psychometrics, and advanced quantitative research methods in education, psychology, and related fields. Dr. Dimitrov earned a PhD in mathematics education from the University of Sofia, Bulgaria (1984), and a PhD in educational measurement and statistics from Southern Illinois University, Carbondale, USA (1995). His professional work and publications have received international recognition. Dr. Dimitrov has served as president of the Mid-Western Educational Research Association in the USA, program chair of the SIG Rasch Measurement of the American Educational Research Association (AERA), editor of Measurement and Evaluation in Counseling and Development, and member of the editorial board of numerous other professional journals in the field of educational and psychological measurement. His most recent research efforts resulted in the development of the D-scoring method of measurement (DSM) as a unified framework of classical and latent scoring and analysis of test data. Dr. Dimitrov is multilingual and has lectured and published professional work in English, Bulgarian, Russian, and French.

    'This is an invaluable resource on the recently developed latent variable method of scoring and analyzing test data. It includes very clear explanations of terminology and excellent illustrations of concepts. It is a must read for anyone interested in measurement theory and practice.'

    George A. Marcoulides, Distinguished Professor, University of California, Santa Barbara