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catIrt (version 0.3-0)

An R Package for Simulating IRT-Based Computerized Adaptive Tests

Description

Functions designed to simulate data that conform to basic unidimensional IRT models (for now 3-parameter binary response models and graded response models) along with Post-Hoc CAT simulations of those models with various item selection methods, ability estimation methods, and termination criteria.

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Version

Install

install.packages('catIrt')

Monthly Downloads

196

Version

0.3-0

License

GPL (>= 2)

Maintainer

Steven Nydick

Last Published

September 15th, 2012

Functions in catIrt (0.3-0)

KL

Calculate Kullback-Leibler Divergence for IRT Models
catIrt

Simulate Computerized Adaptive Tests (CATs)
simIrt

Simulate Responses to IRT Models
itChoose

Choose the Next Item in a CAT
mleEst

Estimate Ability in IRT Models
FI

Calculate Expected and Observed Fisher Information for IRT Models
catIrt-package

Simulate Computerized Adaptive Tests (CATs)