| LNIRT | Log-normal response time IRT modelling |
| LNIRTQ | Log-normal response time IRT modelling with variable person speed (intercept, trend, quadratic) |
| LNRT | Log-normal response time modelling |
| LNRTQ | Log-normal response time modelling with variable person speed (intercept, trend, quadratic) |
| simLNIRT | Simulate data for log-normal response time IRT modelling |
| simLNIRTQ | Simulate data for log-normal response time IRT modelling with variable person speed (intercept, trend, quadratic) |
| summaryIRTQ | Summary Function for LNIRTQ |