Procedures to generate IRT adaptive tests (CAT)


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Documentation for package ‘catR’ version 2.6

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createItemBank Item bank generation
eapEst EAP ability estimation under the 4PL model
eapSem Standard error of EAP ability estimation under the 4PL model
EPV Expected Posterior Variance (EPV)
Ii Item information functions, first and second derivatives (4PL)
MEI (Maximum) Expected Information (MEI)
MWI Maximum likelihood weighted information (MLWI) and maximum posterior weighted information (MPWI)
nextItem Selection of the next item
OIi Observed information function (4PL)
Pi Item response probabilities, first, second and third derivatives (4PL)
plot.cat Random generation of adaptive tests
print.cat Random generation of adaptive tests
randomCAT Random generation of adaptive tests
semTheta Standard error of ability estimation under the 4PL model
startItems Selection of the first items
tcals Items parameters of the TCALS 1998 data set and subgroups of items
test.cbList Testing the format of the list for content balancing
testList Testing the format of the input lists
thetaEst Ability estimation under the 4PL model