Skip to main content
Book cover

Statistical Models for Test Equating, Scaling, and Linking

  • Book
  • © 2011

Overview

  • Winner of the 2013 Division D Significant Contribution to Educational Measurement and Research Methodology award
  • Approaches equating as a theoretical field.
  • Emphasizes good equating theory and practice, and sound understanding of underlying assumptions
  • Challenges the traditional view that only years of apprenticeship to a seasoned practitioner can one master equating
  • Will be a good reference for students and researchers from psychometrics and statistics as well as those in educational measurement
  • Includes supplementary material: sn.pub/extras

Part of the book series: Statistics for Social and Behavioral Sciences (SSBS)

This is a preview of subscription content, log in via an institution to check access.

Access this book

eBook USD 79.99
Price excludes VAT (USA)
  • Available as EPUB and PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book USD 99.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info
Hardcover Book USD 129.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Other ways to access

Licence this eBook for your library

Institutional subscriptions

Table of contents (20 chapters)

  1. Research Questions and Data Collection Designs

  2. A Statistical Perspective on Equating Test Scores

  3. Research Questions and Data Collection Designs

  4. Measurement and Equating Models

  5. Evaluation

Keywords

About this book

The goal of this book is to emphasize the formal statistical features of the practice of equating, linking, and scaling. The book encourages the view and discusses the quality of the equating results from the statistical perspective (new models, robustness, fit, testing hypotheses, statistical monitoring) as opposed to placing the focus on the policy and the implications, which although very important, represent a different side of the equating practice.

The book contributes to establishing “equating” as a theoretical field, a view that has not been offered often before. The tradition in the practice of equating has been to present the knowledge and skills needed as a craft, which implies that only with years of experience under the guidance of a knowledgeable practitioner could one acquire the required skills. This book challenges this view by indicating how a good equating framework, a sound understanding of the assumptions that underlie the psychometric models, and the use of statistical tests and statistical process control tools can help the practitioner navigate the difficult decisions in choosing the final equating function. 

This book provides a valuable reference for several groups: (a) statisticians and psychometricians interested in the theory behind equating methods, in the use of model-based statistical methods for data smoothing, and in the evaluation of the equating results in applied work; (b) practitioners who need to equate tests, including those with these responsibilities in testing companies, state testing agencies, and school districts; and (c) instructors in psychometric, measurement, and psychology programs.

Reviews

From the reviews:

“The intended audience of the book consists of graduate students, researchers, statisticians and psychometricians who are interested in equating theory, as well as practitioners who equate tests. … volume is easy to understand since overall it is clear and well written, and has examples that are nice and easy to follow. … I recommend this book for anyone with an interest in the equating research field, and … the book has succeeded in providing a statistical view on equating which has long been searched for.” (Marie Wiberg, Psychometrika, Vol. 78 (1), January, 2013)

Editors and Affiliations

  • Educational Testing Service, Princeton, USA

    Alina A. Davier

About the editor

Dr. Alina A. von Davier is a Strategic Advisor and a Director of Special Projects in Research and Development at Educational Testing Service (ETS). During her tenure at ETS, she has led an ETS Research Initiative called “Equating and Applied Psychometrics” and has directed the Global Psychometric Services Center. The center supports the psychometric work for all ETS international programs, including TOEFL iBT and TOEIC. She is a co-author of a book on the kernel method of test equating, an author of a book on hypotheses testing in regression models, and a guest co-editor for a special issue on population invariance of linking functions for the journal Applied Psychological Measurement.

Bibliographic Information

Publish with us