Chicago Objective Measurement Table: COMET

This fall COMET celebrated its first birthday. Its goal for next year is improvement in the communication of measurement results in oral and written presentations to lay audiences. At our meeting on November 14th, 1994, Jerry D'Agostino, MESA graduate student and consultant to the Chicago Board of Education, presented his research into measuring key school classroom variables such as social support, student engagement, coherence of material, and others. He presented a problem concerning the interpretation of classroom ratings as measures when the ratings have first been aggregated into summaries. COMET participants recommended disaggregating the summaries, computing person measures, and plotting the person measures for the hypothesized variables across grade levels. This approach first identifies the unique variables, then establishes their robustness across years of schooling. A comment was made that this approach represents a means of reproducing the multidimensional character of social experience in a unidimensional framework. In a second presentation, Donna Tatum, measurement consultant to several large corporations, presented an analysis of marketing data implementing paired comparison methodology. Her early results revealed redundancies in the items that were administered and implied the need for new items.

COMET meetings are held monthly in Judd Hall at the University of Chicago, and are open to all.

Nikolaus Bezruczko

Chicago Objective Measurement Table. Bezruczko N. … Rasch Measurement Transactions, 1994, 8:3 p.381

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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