TAM (version 1.6-0)

IRT.data.tam: Extracting Item Response Dataset

Description

Extracts expected counts for models fitted in TAM. See IRT.data (CDM) for more details.

Usage

## S3 method for class 'tam.mml':
IRT.data(object, \dots)

## S3 method for class 'tam.mml.3pl':
IRT.data(object, \dots)

## S3 method for class 'tamaan':
IRT.data(object, \dots)

Arguments

object

Object of class tam, tam.mml, tam.mml.3pl or tamaan.

...

Further arguments to be passed

Value

• A dataset with item responses

Examples

#############################################################################
# EXAMPLE 1: Dichotomous data sim.rasch
#############################################################################	

data(sim.rasch)
dat <- sim.rasch

# estimate model
mod1 <- tam.mml(dat)
# extract dataset (and weights and group if available)
dmod1 <- IRT.data(mod1)
str(dmod1)