# Applying the Rasch model : fundamental measurement in the human sciences / Trevor G. Bond & Christine M. Fox ; illustrations Tami Schultz.

##### By: Bond, Trevor G.

##### Contributor(s): Fox, Christine M.

Material type: TextPublisher: London : Lawrence Erlbaum Associates, 2001Description: XXIV, 255 str. : ilustr. ; 23 cm.ISBN: 0-8058-4252-7.Other classification: 2240Why measurement is fundamental

Important principles of measurement made explicit

Basic principles of the Rasch model

Building a set of items for measurement

Test equating: Can two tests measure the same ability?

Measurement using Likert scales

The partial credit Rasch model

Measuring facets beyond ability and difficulty

Revealing stage-based development

The Rasch model applied across the human sciences

Rasch modeling applied: Rating scale design

The question of model fit

A synthetic overview

Appendix A: Technical aspects of the Rasch model

Appendix B: Rasch resources

The purposes of this book are to provide an accessible overview of Rasch analyses that does not require readers to have a great deal of statistical background, to demonstrate Rasch analyses with a set of illustrative problems addressed by psychologists and educators, and to lay the groundwork for readers to perform their own Rasch analyses. In short, this book is targeted toward practitioners with relatively little background in measurement theory rather than toward measurement specialists. The author of this review believes that, in summary, the authors have done an admirable job in meeting their major goals. The book provides a nice introduction and summary for non-measurement specialists in psychology and education who simply want to learn about Rasch measurement theory. The book, however, does not provide any new insights for measurement specialists because this was not one of the authors' goals. -- This book was designed to introduce the "how" of Rasch measurement to those who already had thought at least a little about the "why". First, the philosophy and mathematical theory underlying Rasch modeling are clearly in empathy with what many practicing researchers are trying to discover from the research data. Second, the Rasch-based techniques used had very firm bases in general principles of mathematics and measurement. The fundamental underlying mathematical principles, what some researchers have called probabilistic conjoint measurement, are the keys to the success of this approach. The Rasch model provides useful approximations of measures that help us understand the processes underlying the reason why people and items behave in a particular way.

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