Table 1 Variance components from the Generalizability study for the PERT and ORT
| PERT % variance | ORT % variance | |
|---|---|---|
| Participant | 16 | 12 |
| Item | 1.5 | 5.0 |
| Rater | 7.8 | 4.1 |
| participant x item | 12 | 5.5 |
| participant x rater | 24 | 23 |
| Item x rater | 6.5 | 10 |
| participant x item x rater | 33 | 40 |