| CTTsub | This main function estimates true subscores using different methods based on original CTT scores. |
| data.prep | This function prepares data into a requried list format |
| scored.data | Sample scored data |
| subscore.corr | Computing correlation indices for subscores and the total score.. |
| subscore.s | Computing subscores using Haberman's method based on observed subscores. |
| subscore.sx | Computing subscores using Haberman's method based on both observed total scores and observed subscores. |
| subscore.Wainer | Estimating true subscores using Wainer's augmentation method |
| subscore.x | Computing subscores using Haberman's method based on observed total scores. |
| test.data | A list of objects that include both test information and subscores. |
| Yen.OPI | Estimating true subscores using Yen's OPI |