Rational Problem Solving

Rational Problem Solving
Principle: Rasch application:
1. Problems are identified by comparing actual performance to an expected standard performance The standard of performance, the measure, is estimated from all relevant data
2. Problems are deviations in actual performance from the expected standard Discrepancies are flagged by item/person misfit and standardized residuals
3. A precise and complete description of the problem is needed to identify a solution: a) what is happening, b) where it is happening, c) when it is happening, d) to what extent it is happening Detailed quality-control fit analysis, rather than non-specific global evaluations, facilitate precise diagnosis
4. The cause of the problem will be found by comparing problem and non-problem situations. Problems rarely affect everything Comparison of available information about well-behaved and ill-behaved items/persons, and comparative analyses of subsets of substantively different items/persons point to problem sources
5. Recent problems result from some change that has caused an unwanted deviation from expectations Misfit to old measures or comparisons of old and new measures flag changes for further diagnosis
Based on R. K. Wagner (1994) Learning to solve practical problems. PERQ, 15, 2, p. 7.

Rational problem solving. Linacre JM. Rasch Measurement Transactions 1994 7:4 p.325

Rational problem solving. Linacre JM. … Rasch Measurement Transactions, 1994, 7:4 p.325



Rasch Books and Publications
Invariant Measurement: Using Rasch Models in the Social, Behavioral, and Health Sciences, 2nd Edn. George Engelhard, Jr. & Jue Wang Applying the Rasch Model (Winsteps, Facets) 4th Ed., Bond, Yan, Heene Advances in Rasch Analyses in the Human Sciences (Winsteps, Facets) 1st Ed., Boone, Staver Advances in Applications of Rasch Measurement in Science Education, X. Liu & W. J. Boone Rasch Analysis in the Human Sciences (Winsteps) Boone, Staver, Yale
Introduction to Many-Facet Rasch Measurement (Facets), Thomas Eckes Statistical Analyses for Language Testers (Facets), Rita Green Invariant Measurement with Raters and Rating Scales: Rasch Models for Rater-Mediated Assessments (Facets), George Engelhard, Jr. & Stefanie Wind Aplicação do Modelo de Rasch (Português), de Bond, Trevor G., Fox, Christine M Appliquer le modèle de Rasch: Défis et pistes de solution (Winsteps) E. Dionne, S. Béland
Exploring Rating Scale Functioning for Survey Research (R, Facets), Stefanie Wind Rasch Measurement: Applications, Khine Winsteps Tutorials - free
Facets Tutorials - free		 Many-Facet Rasch Measurement (Facets) - free, J.M. Linacre Fairness, Justice and Language Assessment (Winsteps, Facets), McNamara, Knoch, Fan
Other Rasch-Related Resources: Rasch Measurement YouTube Channel
Rasch Measurement Transactions & Rasch Measurement research papers - free An Introduction to the Rasch Model with Examples in R (eRm, etc.), Debelak, Strobl, Zeigenfuse Rasch Measurement Theory Analysis in R, Wind, Hua Applying the Rasch Model in Social Sciences Using R, Lamprianou El modelo métrico de Rasch: Fundamentación, implementación e interpretación de la medida en ciencias sociales (Spanish Edition), Manuel González-Montesinos M.
Rasch Models: Foundations, Recent Developments, and Applications, Fischer & Molenaar Probabilistic Models for Some Intelligence and Attainment Tests, Georg Rasch Rasch Models for Measurement, David Andrich Constructing Measures, Mark Wilson Best Test Design - free, Wright & Stone
Rating Scale Analysis - free, Wright & Masters
Virtual Standard Setting: Setting Cut Scores, Charalambos Kollias Diseño de Mejores Pruebas - free, Spanish Best Test Design A Course in Rasch Measurement Theory, Andrich, Marais Rasch Models in Health, Christensen, Kreiner, Mesba Multivariate and Mixture Distribution Rasch Models, von Davier, Carstensen

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