Psychometric Analysis with Rasch Measurement Theory

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Documentation for package ‘easyRasch2’ version 1.0.0

• DESCRIPTION file.
• User guides, package vignettes and other documentation.
• Package NEWS.

Help Pages

phq9	PHQ-9 Depression Screener (NHANES Subsample)
RMdifGamma	Partial Gamma DIF Analysis
RMdifGammaCutoff	Simulation-Based Partial Gamma DIF Cutoff Determination
RMdifGammaPlot	Plot Distribution of Simulated Partial Gamma DIF Values
RMdifLR	DIF analysis via Andersen's likelihood-ratio test
RMdifTree	Tree-based DIF analysis with effect-size classification
RMdimCFA	Observed one-factor CFA fit and loadings vs a simulated reference
RMdimCFACutoff	Simulated null distribution for one-factor CFA fit and loadings under PCM unidimensionality
RMdimCFAPlot	Plot observed CFA fit and loadings against the simulated null
RMdimMartinLof	Martin-Löf Test of Unidimensionality
RMdimMartinLofResiduals	Standardised Residuals from the Joint Subscore Distribution
RMdimResidualPCA	PCA of Standardized Rasch Residuals
RMdimResidualPCACutoff	Simulation-based Cutoff for First-Contrast Eigenvalue
RMitemCatProb	Item Category Probability Curves
RMitemHierarchy	Item-Threshold Hierarchy Plot
RMitemICCPlot	Conditional Item Characteristic Curves
RMitemInfit	Conditional Item Infit MSQ
RMitemInfitCutoff	Simulation-Based Infit MSQ Cutoff Determination
RMitemInfitCutoffMI	Simulation-Based Infit MSQ Cutoff Determination for Multiply Imputed Data
RMitemInfitCutoffPlot	Plot Distribution of Simulated Infit and Outfit MSQ Values
RMitemInfitMI	Conditional Item Infit MSQ for Multiply Imputed Data
RMitemInfitPlot	Plot Distribution of Simulated Infit and Outfit MSQ Values
RMitemParameters	Item Parameters for a Rasch / Partial Credit Model
RMitemRestscore	Item Restscore Analysis
RMitemRestscoreBoot	Bootstrap Item-Restscore Misfit Detection
RMlocdepGamma	Partial Gamma Local Dependence Analysis
RMlocdepGammaCutoff	Simulation-Based Partial Gamma LD Cutoff Determination
RMlocdepGammaPlot	Plot Distribution of Simulated Partial Gamma LD Values
RMlocdepQ3	Q_3 Residual Correlations for Local Dependence Assessment
RMlocdepQ3Cutoff	Simulation-Based Q_3 Cutoff Determination
RMlocdepQ3Plot	Plot Distribution of Simulated Q_3 Residual Correlations
RMpersonFit	Person-Fit Statistics for a Rasch / Partial Credit Model
RMpersonParameters	Person Locations for a Rasch / Partial Credit Model
RMplotBar	Item Response Distribution Bar Chart
RMplotStackedbar	Stacked Bar Chart of Item Response Distributions
RMplotTile	Tile Plot of Item Response Distributions
RMreliability	Reliability metrics for a Rasch model
RMscoreSE	Raw-Score to Logit Score Transformation Table
RMtargeting	Person-Item Targeting Plot (Wright Map)
RMUreliability	Relative Measurement Uncertainty (RMU)