summary: Summary method for fitted models

In seonghobae/flirt.x32: Flexible Item Response Theory Modeling

Description

A generic function to produce result summaries from flirt objects.

Usage

## S3 method for class 'flirt'
summary(object, ...)

Arguments

object	an object inheriting from class flirt.
...	additional arguments; currently none is used.

Value

An object of class summary.flirt with components,

Data	nobs: number of observations (nobs), nitem: number of items, maxcat: maximum response category, and ngroup: number of groups
Model fit	npar: number of parameters, AIC, BIC, and loglik
Parameterization	for 2PL models, α θ + β or α(θ + β)
Type	between-item or within-item multidimensional models
Dimension	number of dimensions and number of items in each dimension for multidimensional and bifactor models
Parameter estimates	parameter estimates and standard errors.

Author(s)

Minjeong Jeon <[e-mail]>

See Also

flirt

Examples

library(flirt)

## verbal aggression data
data(verb2)

# 2-dimensional 2PL model  for binary data: a(th+b) parameterization
model1 <- flirt(data=verb2, select=2:25, loading=list(on=TRUE, inside=TRUE),  
            mul=list(on=TRUE, dim_info=list(dim1=1:12, dim2=13:24))  )

summary(model1)

seonghobae/flirt.x32 documentation built on May 29, 2019, 6:54 p.m.