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Polytomous Rasch models
Categorical Data Modeling
posted on Monday, April 07, 2008 - 5:36 am
I have questionnaire data with 4 answer categories (from not agree to agree very much). I would like to know, if it is possible to estimate a polytomous Rasch model in Mplus. If yes, how would I do it and what output do I get?
Linda K. Muthen
posted on Monday, April 07, 2008 - 3:06 pm
Yes, you would free all factor loadings and hold them equal while fixing the factor variance to one. There is nothing special that needs to be done to the thresholds.
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