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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 measurement to
rater-mediated assessments, (3) description of the lens model for
rater judgments, (4) integration of principles of invariant
measurement with the lens model of cognitive processes of raters,
(5) illustration of substantive and psychometric issues related to
rater-mediated assessments in terms of validity, reliability, and
fairness, and (6) discussion of theoretical and practical issues
related to rater-mediated assessment systems. Invariant measurement
is fast becoming the dominant paradigm for assessment systems
around the world, and this book provides an invaluable resource for
graduate students, measurement practitioners, substantive theorists
in the human sciences, and other individuals interested in
invariant measurement when judgments are obtained with rating
scales.
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 measurement to
rater-mediated assessments, (3) description of the lens model for
rater judgments, (4) integration of principles of invariant
measurement with the lens model of cognitive processes of raters,
(5) illustration of substantive and psychometric issues related to
rater-mediated assessments in terms of validity, reliability, and
fairness, and (6) discussion of theoretical and practical issues
related to rater-mediated assessment systems. Invariant measurement
is fast becoming the dominant paradigm for assessment systems
around the world, and this book provides an invaluable resource for
graduate students, measurement practitioners, substantive theorists
in the human sciences, and other individuals interested in
invariant measurement when judgments are obtained with rating
scales.
Items with ordered response categories are common in survey
research, such as when respondents are asked how much they agree
with certain statements. But how large are the differences between
categories of response, and how well do they distinguish between
respondents? This volume is the first to introduce the evaluation
of rating scales to an audience of survey researchers. Evaluating
Rating Scale Functioning for Survey Research provides researchers
with an overview of rating scale analysis along with practical
guidance on how to conduct such analyses with their own survey
data. Author Stefanie A. Wind presents three categories of methods:
Rasch models; non-Rasch Item Response Theory (IRT) models; and
non-parametric models, together with practical examples. Tutorials,
datasets, and software code (R and Facets) to accompany the book
are available on the book's website.
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