IRT.likelihood {TAM}

Extracting Individual Likelihood and Individual Posterior

Description

Extracts individual likelihood and posterior for models fitted in TAM. See CDM::IRT.likelihood for more details.

Usage

## S3 method for class 'tam'
IRT.likelihood(object, ...)
## S3 method for class 'tam'
IRT.posterior(object, ...)

## S3 method for class 'tam.mml'
IRT.likelihood(object, ...)
## S3 method for class 'tam.mml'
IRT.posterior(object, ...)

## S3 method for class 'tam.mml.3pl'
IRT.likelihood(object, ...)
## S3 method for class 'tam.mml.3pl'
IRT.posterior(object, ...)

## S3 method for class 'tamaan'
IRT.likelihood(object, ...)
## S3 method for class 'tamaan'
IRT.posterior(object, ...)

## S3 method for class 'tam.latreg'
IRT.likelihood(object, ...)
## S3 method for class 'tam.latreg'
IRT.posterior(object, ...)

## S3 method for class 'tam.np'
IRT.likelihood(object, ...)
## S3 method for class 'tam.np'
IRT.posterior(object, ...)

Arguments

object

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

...

Further arguments to be passed

Value

See CDM::IRT.likelihood.

Examples

#############################################################################
# EXAMPLE 1: Dichotomous data data.sim.rasch - extracting likelihood/posterior
#############################################################################

data(data.sim.rasch)
# 1PL estimation
mod1 <- TAM::tam.mml(resp=data.sim.rasch)
lmod1 <- IRT.likelihood(mod1)
str(lmod1)
pmod1 <- IRT.posterior(mod1)
str(pmod1)