DIF_mst: Exploratory test for Differential Item Functioning

In dexterMST: CML and Bayesian Calibration of Multistage Tests

Exploratory test for Differential Item Functioning

Description

Compares two parameter objects and produces a test for DIF based on equality of relative item difficulties category locations

Usage

DIF_mst(db, person_property, predicate = NULL)

Arguments

db	an dexterMST db handle
person_property	name of a person property defined in your dexterMST project
predicate	logical predicate to select data to include in the analysis

References

Bechger, T. M. and Maris, G (2015); A Statistical Test for Differential Item Pair Functioning. Psychometrika. Vol. 80, no. 2, 317-340.

Examples

## Not run: 

dif = DIF_mst(db, person_property = 'test_mode')
print(dif)
plot(dif)


## End(Not run)

dexterMST documentation built on July 4, 2024, 9:07 a.m.