Information functions of the generalized partial credit model
1993
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Information functions of the generalized partial credit model
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1993
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Abstract
The concept of information functions developed
for dichotomous item response models is adapted
for the partial credit model. The information function
is explained in terms of the model parameters
and scoring functions. The relationship between
the item information function and the item
response function also is discussed. The information
function then is used to investigate the effect
of collapsing and recoding categories of
polytomously-scored items of the National Assessment
of Educational Progress (NAEP). The NAEP
writing items were calibrated and the item and test
information is used to discuss desirable properties
of polytomous items. Index terms: information
function, item response model, National Assessment of
Educational Progress (NAEP), partial credit model,
polytomous item response model.
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Muraki, Eiji. (1993). Information functions of the generalized partial credit model. Applied Psychological Measurement, 17, 351-363. doi:10.1177/014662169301700403
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Muraki, Eiji. (1993). Information functions of the generalized partial credit model. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/116374.
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