| Beta_hat | Estimate fixed effects by nonlinear least squares |
| bootstrap_se | Bootstrap standard errors for variance component estimates |
| Dhypothesis_test | Permutation test for random effects in linear and nonlinear mixed-effects models |
| Dmethod | Non-parametric approach to estimate variance components in a linear and nonlinear mixed-effects model |
| MM_base | Compute first-stage quantities for MM and MMF estimators |
| plot.Dmethod | Plot method for 'Dmethod' objects |
| plot.Dtest | Plot method for 'Dtest' objects |
| plot_condition | Plot per-subject condition numbers |
| plot_fitted | Plot fitted curves overlaid on observed data |
| plot_perm_hist | Histogram of the permutation null distribution |
| plot_profiles | Plot raw individual trajectories |
| plot_residuals | Plot residuals versus fitted values |
| plot_variance | Compare variance component estimates across methods |
| SkillAcq | Skill acquisition data |
| Tstat | Compute the observed test statistic |
| ZandYPred | Compute Jacobian matrix and fixed-effects predicted values |