Collection of Methods to Detect Dichotomous Differential Item Functioning (DIF)


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Documentation for package ‘difR’ version 5.1

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difR-package Collection of methods to detect dichotomous differential item functioning (DIF) in psychometrics
breslowDay Breslow-Day DIF statistic
contrastMatrix Contrast matrix for computing generalized Lord's chi-squared DIF statistic
dichoDif Comparison of DIF detection methods
difBD Breslow-Day DIF method
difGenLogistic Generalized logistic regression DIF method
difGenLord Generalized Lord's chi-squared DIF method
difGMH Generalized Mantel-Haenszel DIF method
difLogistic Logistic regression DIF method
difLogReg General logistic regression DIF method
difLord Lord's chi-squared DIF method
difLRT Likelihood-Ratio Test DIF method
difMH Mantel-Haenszel DIF method
difR Collection of methods to detect dichotomous differential item functioning (DIF) in psychometrics
difRaju Raju's area DIF method
difSIBTEST SIBTEST and Crossing-SIBTEST DIF method
difStd Standardization DIF method
difTID Transformed Item Difficulties (TID) DIF method
genDichoDif Comparison of DIF detection methods among multiple groups
genLogistik Generalized logistic regression DIF statistic
genLordChi2 Generalized Lord's chi-squared DIF statistic
genMantelHaenszel Generalized Mantel-Haenszel DIF statistic
itemPar1PL Item parameter estimation for DIF detection using Rasch (1PL) model
itemPar2PL Item parameter estimation for DIF detection using 2PL model
itemPar3PL Item parameter estimation for DIF detection using 3PL model
itemPar3PLconst Item parameter estimation for DIF detection using constrained 3PL model
itemParEst Item parameter estimation for DIF detection
itemRescale Rescaling item parameters by equal means anchoring
Logistik Logistic regression DIF statistic
LordChi2 Lord's chi-square DIF statistic
LRT Likelihood-Ratio Test DIF statistic
mantelHaenszel Mantel-Haenszel DIF statistic
plot.BD Breslow-Day DIF method
plot.genLogistic Generalized logistic regression DIF method
plot.GenLord Generalized Lord's chi-squared DIF method
plot.GMH Generalized Mantel-Haenszel DIF method
plot.Logistic Logistic regression DIF method
plot.Lord Lord's chi-squared DIF method
plot.LRT Likelihood-Ratio Test DIF method
plot.MH Mantel-Haenszel DIF method
plot.PDIF Standardization DIF method
plot.Raj Raju's area DIF method
plot.SIBTEST SIBTEST and Crossing-SIBTEST DIF method
plot.TID Transformed Item Difficulties (TID) DIF method
print.BD Breslow-Day DIF method
print.dichoDif Comparison of DIF detection methods
print.genDichoDif Comparison of DIF detection methods among multiple groups
print.genLogistic Generalized logistic regression DIF method
print.GenLord Generalized Lord's chi-squared DIF method
print.GMH Generalized Mantel-Haenszel DIF method
print.Logistic Logistic regression DIF method
print.Lord Lord's chi-squared DIF method
print.LRT Likelihood-Ratio Test DIF method
print.MH Mantel-Haenszel DIF method
print.PDIF Standardization DIF method
print.Raj Raju's area DIF method
print.SIBTEST SIBTEST and Crossing-SIBTEST DIF method
print.subLogistic Testing for DIF among subgroups with generalized logistic regression
print.TID Transformed Item Difficulties (TID) DIF method
RajuZ Raju's area DIF statistic
selectDif Selection of one of the DIF detection methods
selectGenDif Selection of one of the DIF detection methods among multiple groups
sibTest SIBTEST DIF statistic
stdPDIF Standardization DIF statistic
subtestLogistic Testing for DIF among subgroups with generalized logistic regression
verbal Verbal Aggression Data Set