| checkAlpha | Compute Cronbach's Alpha for Two Test Halves |
| checkAngoff | Compute Angoff-Feldt Reliability Coefficient for two test halves |
| checkCongeneric | Gilmer-Feldt Congeneric Reliability for Each Test Half |
| checkDistribution | Compare Distributions of Two Test Halves |
| checkLocation | Robust Location Comparison for Two Test Halves (Yuen's trimmed t-test) |
| checkScale | Compare Scale (Variability) Between Two Test Halves |
| checkSpearmanBrown | Compute Spearman-Brown Reliability Coefficient |
| checkSplit | Split a Test into Two Halves |
| compareCSEM | Compare Conditional SEM with Global SEM |
| csemBinom | Binomial Model for Conditional Standard Error of Measurement (CSEM) |
| csemBoots | Bootstrap Conditional Standard Error of Measurement (CSEM) based on Item Sampling |
| csemFeldtQualls | Feldt & Qualls (1996) method for Conditional Standard Error of Measurement (CSEM) |
| csemFSG | ANOVA method for Conditional Standard Error of Measurement (CSEM) |
| csemMF | Mollenkopf-Feldt method for Conditional Standard Error of Measurement (CSEM) |
| csemStrong | Strong True Score (Compound Binomial) Model for CSEM |
| csemThorndike | Thorndike's method for Conditional Standard Error of Measurement (CSEM) |
| kr20 | KR-20 Reliability Coefficient for Dichotomous Items |
| kr21 | KR-21 Reliability Coefficient for Dichotomous Items |
| plotCSEM | Plot Conditional Standard Error of Measurement (CSEM) Curve |
| polynomialDegree | Selecting the Polynomial Degree for CSEM Smoothing (Linear Regression) |
| scaleCSEM | Compute Conditional Standard Error of Measurement (CSEM) for Non-Linear Scale Scores |
| scoreCSEM | Obtain CSEM for individual scores from a reference table |
| stdCSEM | Standardized Conditional Reliability (Raju et al., 2007) |