Kudos for ACER Rasch-based Research

"The Education Department of Western Australia would like to pay tribute to ACER [Australian Council for Educational Research] for conducting such a rigorous and meticulous investigation into the validity of the [First Steps] Developmental Continua. It should be placed on record that the analysis of ACER data carried out by the department substantiated the worth of the research, as it showed clearly that ambiguities and errors had been clearly identified. This made it possible to revise and improve the Continua to ensure that as accurate and sensitive a picture of literacy as possible could be offered to teachers."
from an Executive Summary prepared by the Ministry of Education, Western Australia, 1994.

"I would like to pay tribute to ACER... The aspect of the work that impressed me most profoundly was the presentation and analysis of the data. I examined the [ACER] report in order to identify every indicator shown to aberrant. In each case I was able to pinpoint a logical and common-sense reason why the indicator in question had caused problems and needed attention. This seems to be an incredibly convincing testimony to the worth of the research."
Alison Dewsbury, Manager, First Steps Consultancy Unit, Education Department of Western Australia, in a letter to Geoff Masters, ACER.

ACER Research. … Rasch Measurement Transactions, 1994, 8:2 p.364

Rasch Publications
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
in Spanish: Análisis de Rasch para todos, Agustín Tristán Mediciones, Posicionamientos y Diagnósticos Competitivos, Juan Ramón Oreja Rodríguez

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