All functions

checkContextVars()

check for consistency of context variables and items

checkLinking()

check for linked design

compareDefineModelObjects()

Compares two defineModel objects

correlationFromRes()

Gives correlation estimates from the object returned by getResults()

defineModel()

Prepares IRT analysis for Conquest, TAM, or mirt

des2

Exemplary test design which may be typical in the context of large-scale assessment.

des3

Exemplary test design for math and sciences (Biology, Chemistry, Physics).

eapFromRes()

Collects all EAP results from the object returned by getResults()

eapRelFromRes()

Gives EAP reliability from the object returned by getResults()

eatModel-package

Specify and run IRT models from R (using Conquest, TAM, or mirt), including equating methods and parameter transformation.

equat1pl()

1pl equating with optional elimination of linking DIF items

get.dsc()

Read Conquest ‘descriptives’ output files.

get.equ()

Reads equivalence table created in Conquest analysis.

get.itn()

Read ConQuest ‘itanal’ Output Files

get.plausible()

Read Conquest Plausible Values Output Files

get.prm()

Read Conquest prm (parameter) Output Files

get.shw()

Read ConQuest showfiles

get.wle()

Read Conquest WLE or MLE Output Files

getResults()

Collect all results from Conquest, TAM, or mirt analyses into a common data frame

getTrafo()

Contains the transformation rules from the IQB studies

itemFromRes()

Collect all item results from the object returned by getResults()

multiEquatError()

1pl linking errors for three measurement occasions

plotDevianceConquest()

Deviance Plot for Conquest log files

plotDevianceMirt()

Deviance Plot for mirt objects

plotICC()

Plots item characteristic curves

pvFromRes()

Collects all plausible values from the object returned by getResults()

q3FromRes()

Extracts the Q3 matrices from the object returned by getResults()

reading

Dichotomous and partial credit responses for reading comprehension data obtained from large-scale assessment

regcoefFromRes()

Gives regression coefficients (betas) from the object returned by getResults()

replaceLinkingError()

Output interface for multiEquatError

runModel()

Run IRT model specified by 'defineModel' using Conquest, TAM, or mirt

simEquiTable()

Computes equivalence table for the Rasch and partial credit model

splitModels()

Create several models by splitting the qMatrix and/or person.groups

transformToBista()

Transformation of item and person parameters to the Bista metric.

trends

Reading and listening achievement test data obtained from large-scale assessment at three times of measurement

wleFromRes()

Collects all WLEs from the object returned by getResults()

wleRelFromRes()

Gives WLE reliability from the object returned by getResults()