Person Parameter Estimation
Create a model-type vector template
Run a jackknife
Person-Fit statistics
Estimation of Person Parameters and calculation of Person Fit for the ...
Estimate Person Parameters for the 4-PL model
Estimate Person Parameters for the GPCM
Estimate Person Parameters
Person Assessment function
Draw Plausible values
Simulate data for 1/2/3/4-pl model
Simulate data for the gpcm model
The PP package includes estimation of (MLE, WLE, MAP, EAP, ROBUST) person parameters for the 1,2,3,4-PL model and the GPCM (generalized partial credit model). The parameters are estimated under the assumption that the item parameters are known and fixed. The package is useful e.g. in the case that items from an item pool / item bank with known item parameters are administered to a new population of test-takers and an ability estimation for every test-taker is needed.