1 Reply Latest reply on Dec 2, 2011 11:24 AM by 44165

    Is there anyway to get the validity results for the items of PISA?

    New User



      I am interested in factor analysis results of the PISA questionnaire items. In the technical report it is said that CFA and IRT used for validity and item fit. I am planning to use PISA dataset for a project and it will be so helpful if I can find the CFA results for polytomous items especially.