Rasch Measurement in Language Education Part 2:
Measurement Scales and Invariance
James Sick, Ed.D. (J. F. Oberlin University, Tokyo)
|"Rasch theorists . . . argue that raw scores should be regarded as rankings only."|
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[ p. 29 ]Q: Are item characteristics really so dependable that we can expect them to generate the same Rasch calibrations in all conceivable testing contexts?
|"Rasch item calibrations are population parameters estimated from sample data and should always be regarded as approximate."|
[ p. 30 ]Sick, J. R. (2007). The learner's contribution: Individual differences in language learning in a Japanese high school. (Doctoral Dissertation, Temple University Japan, 2007). Available through ProQuest Dissertation Abstracts International, UMI: 3255147.
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