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| Hoffman, Lore | 1 |
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Peer reviewedEid, Michael; Hoffman, Lore – Journal of Educational and Behavioral Statistics, 1998
An extension of the graded-response model of F. Samejima (1969) is presented for the measurement of variability and change. The model is illustrated with a longitudinal study of student interest in radioactivity conducted with about 1,200 German students in elementary school when the study began. (SLD)
Descriptors: Change, Elementary Education, Elementary School Students, Foreign Countries
