Why do we ignore guess parameter in polytomous iRT model?

philchalmers / mirt

Multidimensional item response theory

https://philchalmers.github.io/mirt/

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Why do we ignore guess parameter in polytomous iRT model? #159

Closed gitbobo closed 5 years ago

gitbobo commented 5 years ago

In dichotomous IRT model, we have 3PL to estimate the guess parameter in mirt package.
For polytomous data, there's no model to consider guess parameter in mirt package. Why?

philchalmers commented 5 years ago

This is not a coding issue or bug. Please use the mirt-package forum to ask such questions.