Invariant Measurement with Raters and Rating Scales: Rasch Models for Rater-Mediated Assessments

The purpose of this book is to present methods for developing, evaluating and maintaining rater-mediated assessment systems. Rater-mediated assessments involve ratings that are assigned by raters to persons responding to constructed-response items (e.g., written essays and teacher portfolios) and other types of performance assessments.

This book addresses the following topics: (1) introduction to the principles of invariant measurement, (2) application of the principles of invariant measure...