# Psychometric Analysis with Rasch Measurement Theory

## Documentation for package ‘easyRasch2’ version 1.1.1

- 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)