GPCM - What does GPCM stand for? The Free Dictionary
References in periodicals archive
The construct validity of the QBO was established through IRT analysis using the GRM and GPCM
, both of which deal with polytomous variables.
Examples of the PARSCALE Codes Used for GPCM
, PCM and RSM Calibration are appended.
The accuracy of linking constant estimates and the accuracy of rescaled GPCM
parameter estimates obtained with each method was examined in a simulation study.
In general, for the fixed length test, both the GPCM
and the GRM models, estimation method, and test length has some impact on bias, SE, and RMSE.