The item characteristic curve is performed for the multidimensional polytomous Rasch model or the continuous Rating Scale Model.
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Object of class
The item characteristic curve (ICC) plots the response probability depending on person and item parameter.
For plotting the ICC, the object resulting from MPRM
MPRM or CRSM
CRSM or DRM
DRM is the input for the
The default argument
items="all" displays ICC curves for all items in the object. With a numeric vector
items, a subset of
items can be selected for which ICC plots are displayed.
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