4 facet rating scale with unobserved categories: ice-skating
The Pairs ice-skating competition at the 2002 Winter Olympics in Salt Lake City generated considerable controversy. Allegations were made that the French judge was influenced by outsiders. Ultimately Gold Medals were awarded to both a Russian and a Canadian pair.
Here are the data set up as a 4-facet analysis in Olympics.txt. The original ratings are numbers like 5.4. These have been multiplied by 10 to produce the integer ratings that Facets expects. Not all intermediate categories in the functional range of 2.9 to 5.9 were observed, but the unobserved intermediate category 3.0 is maintained in the rating scale.
Use the Output Tables menu to look for interactions between judges and skater pairs.
Facets specifications and data (in file Olympics.txt):
Title = "Pairs Skating: Winter Olympics, SLC 2002"
Facets = 4 ; Facets are Judges, Skating Pairs, Programs, Skills
Convergence= 12.0, .001 ; convergence when largest residual is less than 12.0
; and biggest logit change is less than .001
Positive = 1, 2, 3, 4 ; all Facets positive:
?,?,?,?, ISU ; keep unobserved intermediate categories with scores up to 6.0
Rating scale = ISU, R60, Keep ; 'Keep" maintains unobserved intermediate categories in the rating scale
59 = 5.9 ; all observed ratings multiplied by 10
1, Judge ; leniency
1= Rus ;Mrs. Marina SANAIA : RUSSIA
2, Pair ; ability
1= BS-Rus ; 1 BEREZHNAYA Elena / SIKHARULIDZE Anton : RUS
2= SP-Can ; 5 SALE Jamie / PELLETIER David : CAN
3, Program ; easiness
1 = Short
2 = Free
4, Skill ; easiness
1 = Technical Merit
2 = Artistic Impression
1, 1-9 ; Facet 1 is the 9 judges
1 1 1 58 58 57 58 58 58 58 58 57
1 1 2 58 58 58 58 59 58 58 58 58
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|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 with Raters and Rating Scales: Rasch Models for Rater-Mediated Assessments, George Engelhard, Jr. & Stefanie Wind||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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