TAM: IRT.factor.scores.tam – R documentation

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TAM

IRT.factor.scores.tam

Extracting Factor Scores in TAM

Description

Extracts factor scores for models fitted in TAM. See CDM::IRT.factor.scores for more details.

Usage

## S3 method for class 'tam'
IRT.factor.scores(object, type="EAP", ...)

## S3 method for class 'tam.mml'
IRT.factor.scores(object, type="EAP", ...)

## S3 method for class 'tam.mml.3pl'
IRT.factor.scores(object, type="EAP", ...)

## S3 method for class 'tamaan'
IRT.factor.scores(object, type="EAP", ...)

Arguments

`object`	Object of class `tam`, `tam.mml`, `tam.mml.3pl` or `tamaan`.
`type`	Type of factor score to be used. `type="EAP"` can be used for all classes in TAM while `type="WLE"` and `type="MLE"` can only be used for objects of class `tam.mml`. Further arguments to the used function `tam.wle` can be specified with `...`.
`...`	Further arguments to be passed

Value

See CDM::IRT.factor.scores.

Examples

## Not run: 
#############################################################################
# EXAMPLE 1: data.sim.rasch - Different factor scores in Rasch model
#############################################################################

data(data.sim.rasch)
# 1PL estimation
mod1 <- TAM::tam.mml(resp=data.sim.rasch)
# EAP
pmod1 <- IRT.factor.scores( mod1 )
# WLE
pmod1 <- IRT.factor.scores( mod1, type="WLE" )
# MLE
pmod1 <- IRT.factor.scores( mod1, type="MLE" )

## End(Not run)

TAM

Test Analysis Modules

v3.6-45

GPL (>= 2)

Authors

Alexander Robitzsch [aut,cre] (<https://orcid.org/0000-0002-8226-3132>), Thomas Kiefer [aut], Margaret Wu [aut]

Initial release

2021-04-22 14:35:52