Table 2.
The final Q-matrix.
| Item | Ob1 | Ob2 | Ob3 | Ob4 | Ob5 | Items | Ob1 | Ob2 | Ob3 | Ob4 | Ob5 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Item1 | 1 | 0 | 0 | 0 | 0 | Item11 | 1 | 0 | 0 | 1 | 0 |
| Item2 | 1 | 1 | 0 | 0 | 0 | Item12 | 0 | 0 | 0 | 1 | 1 |
| Item3 | 0 | 1 | 0 | 1 | 0 | Item13 | 0 | 1 | 0 | 1 | 1 |
| Item4 | 1 | 1 | 0 | 1 | 0 | Item14 | 0 | 0 | 0 | 0 | 1 |
| Item5 | 0 | 0 | 1 | 0 | 0 | Item15 | 0 | 0 | 1 | 1 | 1 |
| Item6 | 0 | 0 | 1 | 1 | 1 | Item16 | 0 | 0 | 0 | 1 | 1 |
| Item7 | 0 | 0 | 1 | 1 | 0 | Item17 | 0 | 0 | 1 | 1 | 1 |
| Item8 | 0 | 0 | 1 | 1 | 0 | Item18 | 0 | 0 | 0 | 1 | 1 |
| Item9 | 0 | 0 | 0 | 1 | 0 | Item19 | 0 | 0 | 0 | 1 | 1 |
| Item10 | 0 | 0 | 0 | 0 | 1 |
1 indicates the corresponding barrier is measured by a particular item. 0 indicates otherwise. Bold font numbers indicate revisions from the preliminary Q-matrix.