LRtest.psy: itemfit statistics for 'psychotools' Anderson's likelihood...

In exhaustiveRasch: Item Selection and Exhaustive Search for Rasch Models

itemfit statistics for 'psychotools' Anderson's likelihood ratio test for 'psychotools'

Description

itemfit statistics for 'psychotools' Anderson's likelihood ratio test for 'psychotools'

Usage

LRtest.psy(model, modelType, splitcr = "median", splitseed = NULL)

Arguments

model	an object of 'psychotools' class 'raschmodel', 'pcmodel' or 'rsmodel' (a model previously fit using the 'psychotools' package) matching the value of modelType.
modelType	a character value defining the type of Rasch model. Possible values: "RM", "PCM", "RSM"
splitcr	Split criterion for subject raw score splitting for test_LR. "median" uses the median as split criterion, "mean" performs a mean split, "random" performs a random split (in this case, the seed can be set with the "splitseed" argument. splitcr can also be a vector which assigns each person to a certain subgroup (typically an external criterion). This vector can be numeric, character or a factor.
splitseed	seed for random split

Value

the p-value of the likelihood-ratio test.

Examples

 model <- psychotools::raschmodel(ADL[c(6,7,12,14,15)])
 LRtest.psy(model=model, modelType="RM", splitcr="random", splitseed=332)

exhaustiveRasch documentation built on April 3, 2025, 6:18 p.m.