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catR (version 3.9)

Procedures to Generate Patterns under Computerized Adaptive Testing

Description

Generation of response patterns under dichotomous and polytomous computerized adaptive testing (CAT) framework.

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Version

Install

install.packages('catR')

Monthly Downloads

946

Version

3.9

License

GPL (>= 2)

Maintainer

David Magis

Last Published

July 15th, 2016

Functions in catR (3.9)

breakBank

Breaking the item bank in item parameters and group membership (for content balancing)
genPattern

Random generation of item response patterns under dichotomous and polytomous IRT models
genDichoMatrix

Item bank generation (dichotomous models)
integrate.catR

Numerical integration by linear interpolation (for catR internal use)
Ii

Item information functions, first and second derivatives (dichotomous and polytomous models)
checkStopRule

Checking whether the stopping rule is satisfied
eapEst

EAP ability estimation (dichotomous and polytomous IRT models)
GDI

Global-discrimination index (GDI) and posterior global-discrimination index (GDIP) for item selection
nextItem

Selection of the next item
eapSem

Standard error of EAP ability estimation (dichotomous and polytomous IRT models)
simulateRespondents

Simulation of multiple examinees of adaptive tests
Pi

Item response probabilities, first, second and third derivatives (dichotomous and polytomous models)
test.cbList

Testing the format of the list for content balancing under dichotomous or polytomous IRT models
testList

Testing the format of the input lists
semTheta

Standard error of ability estimation (dichotomous and polytomous models)
thetaEst

Ability estimation (dichotomous and polytomous models)
tcals

Items parameters of the TCALS 1998 data set and subgroups of items
startItems

Selection of the first items