| PerFit-package | Person Fit |
| A.KB | Agreement, disagreement, and dependability statistics |
| C.Sato | C.Sato, Cstar person-fit statistics |
| Cstar | C.Sato, Cstar person-fit statistics |
| cutoff | Compute a cutoff value given the scores of a person-fit statistic |
| D.KB | Agreement, disagreement, and dependability statistics |
| E.KB | Agreement, disagreement, and dependability statistics |
| flagged.resp | Find (potentially) aberrant response patterns |
| G | Number of Guttman errors |
| Gnormed | Number of Guttman errors |
| Gnormed.poly | Number of Guttman errors for polytomous items |
| Gpoly | Number of Guttman errors for polytomous items |
| Ht | Ht person-fit statistic |
| InadequacyData | The NPV-J inadequacy scale data |
| IntelligenceData | Intelligence data (number completion) |
| lz | lz and lzstar person-fit statistics |
| lzpoly | lzpoly person-fit statistic |
| lzstar | lz and lzstar person-fit statistics |
| NCI | NCI person-fit statistic |
| PerFit | Person Fit |
| PerFit.PFS | Compute several person-fit statistics |
| PerFit.SE | Compute standard errors for person fit statistics |
| PhysFuncData | The SF-36 physical functioning data |
| plot.PerFit | Plot method for objects of class "PerFit" |
| PRFplot | Person response function (PRF) |
| print.PerFit | Print method for objects of class "PerFit" |
| r.pbis | Personal biserial statistic |
| summary.PerFit | Summary method for objects of class "PerFit" |
| U3 | U3, ZU3 person-fit statistics |
| U3poly | U3poly person-fit statistic |
| ZU3 | U3, ZU3 person-fit statistics |