New developments for extended Rasch modeling in R.

  • Patrick Mair (Ko-Autor*in)
  • Reinhold Hatzinger (Ko-Autor*in)

Aktivität: VortragWissenschaftlicher Vortrag (Science-to-Science)


The eRm package allows for the computation of extended Rasch models. This package implements the
Rasch model, the linear logistic test model (LLTM), the linear logistic model with relaxed assumptions
(LLRA), the (linear) rating scale model (RSM and LRSM), and the (linear) partial credit model (PCM and
LPCM). Conditional maximum likelihood estimation (CML) is used for item parameter estimation. Various
model diagnostics such as Andersens LR-test, item-fit and person-fit statistics, graphical model tests, exact model tests, etc. are available. In this talk we give an overview of recent developments and implementations.
Zeitraum20 Juli 201023 Juli 2010
EreignistiteluseR! The R user Conference 2010
VeranstaltungstypKeine Angaben