Long on the wall of Ben Wright's office, Judd 438, at the University of Chicago. Ben became emeritus on January 1, 2004. He continues to live in Hyde Park, Chicago.
"The so-called perfect scale, in the scalogram sense, is a
one-dimensional structure for data of the kind studied by item
analysis. The dimensionality of data is an empirical phenomenon,
and not to be determined by fiat. Therefore, I have suggested
abandoning the idea and terminology of scale construction in favor
of scale analysis."
Louis Guttman, Psychometrika, Vol. 36, No. 4, December, 1971.
Guttman analyzes data hoping to find a latent scale. Rasch constructs the latent scale from data intended to manifest that scale.
"Quality is never an accident. It is always the result of
intelligent effort. There must be the will to produce a superior
RMT 17:4 Notes and Quotes, Rasch Measurement Transactions, 2004, 17:4 p.954
|Rasch Measurement Transactions (free, online)||Rasch Measurement research papers (free, online)||Probabilistic Models for Some Intelligence and Attainment Tests, Georg Rasch||Applying the Rasch Model 3rd. Ed., Bond & Fox||Best Test Design, Wright & Stone|
|Rating Scale Analysis, Wright & Masters||Introduction to Rasch Measurement, E. Smith & R. Smith||Introduction to Many-Facet Rasch Measurement, Thomas Eckes||Invariant Measurement: Using Rasch Models in the Social, Behavioral, and Health Sciences, George Engelhard, Jr.||Statistical Analyses for Language Testers, Rita Green|
|Rasch Models: Foundations, Recent Developments, and Applications, Fischer & Molenaar||Journal of Applied Measurement||Rasch models for measurement, David Andrich||Constructing Measures, Mark Wilson||Rasch Analysis in the Human Sciences, Boone, Stave, Yale|
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