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This is the second edition of an introductory text that describes the principles of invariant measurement; how invariant measurement can be achieved using Rasch measurement theory; and how to use invariant measurement to solve a variety of measurement problems in the social, behavioral, and health sciences.
George Engelhard, Jr. is a professor of educational measurement and policy at the University of Georgia.
Jue Wang is a professor at the University of Science and Technology of China.
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