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mcIRT (version 0.41)

IRT models for multiple choice items (mcIRT)

Description

This package provides functions to estimate two popular IRT-models: The Nominal Response Model (Bock 1972) and the quite recently developed Nested Logit Model (Suh & Bolt 2010). These are two models to examine multiple-choice items and other multicategorial response formats.

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Install

install.packages('mcIRT')

Monthly Downloads

37

Version

0.41

License

GPL-3

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Last Published

August 30th, 2014

Functions in mcIRT (0.41)

nelm

Estimating a Nested Logit Model
NRM.sim

Simulate data (nrm)
model_comp

Compare different models
DDF

Differential Distractor Functioning
examp1

Simulated estimation results
mcIRT-package

IRT models for multiple choice items (mcIRT)
plot.nelm

Plotting an object of class nlm
lrt

Likelihood Ratio Test
NLM.sim

Simulates data according to the Nested Logit Model
plot.standardization

Plot DDF
plot_ldistr

Plot latent distributions
plot.nrm

Plotting an object of class nrm
plotINF

Plot Information Curves
designTemp

Create a design skeleton
nrm

Estimating a Nominal Response Model
reshMG

Reshaping the raw data