PP

Author: Manuel Reif, Jan Steinfeld
Contact: https://cran.r-project.org/web/packages/PP/index.html
Description: PP: Person Parameter Estimation. 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.
Analyses: DIF
System Requirements: Windows, Linus, or OS
Measurement Model: IRT/Rasch
License Type: Open-Source (R)
Documentation: user manual