Table 7.
Item information.
| Pre-test | Post-test | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Item | Pc | g | s | RMSEA | Item | Pc | g | s | RMSEA |
| 1 | 0.990 | 1.000 | 0.010 | 0.036 | 1 | 0.961 | 0.878 | 0.000 | 0.087 |
| 2 | 0.882 | 0.769 | 0.094 | 0.066 | 2 | 0.814 | 0.746 | 0.143 | 0.083 |
| 3 | 0.843 | 0.000 | 0.104 | 0.038 | 3 | 0.765 | 0.214 | 0.125 | 0.072 |
| 4 | 0.569 | 0.185 | 0.182 | 0.060 | 4 | 0.627 | 0.002 | 0.188 | 0.060 |
| 5 | 0.941 | 0.856 | 0.000 | 0.046 | 5 | 0.588 | 0.252 | 0.263 | 0.076 |
| 6 | 0.971 | 0.751 | 0.011 | 0.061 | 6 | 0.686 | 0.344 | 0.169 | 0.077 |
| 7 | 0.824 | 0.269 | 0.063 | 0.054 | 7 | 0.725 | 0.409 | 0.000 | 0.067 |
| 8 | 0.637 | 0.374 | 0.169 | 0.087 | 8 | 0.608 | 0.315 | 0.166 | 0.085 |
| 9 | 0.912 | 0.830 | 0.000 | 0.068 | 9 | 0.333 | 0.124 | 0.485 | 0.080 |
| 10 | 0.676 | 0.218 | 0.000 | 0.053 | 10 | 0.696 | 0.452 | 0.172 | 0.102 |
| 11 | 0.745 | 0.000 | 0.191 | 0.054 | 11 | 0.735 | 0.401 | 0.045 | 0.099 |
| 12 | 0.500 | 0.259 | 0.260 | 0.126 | 12 | 0.627 | 0.406 | 0.253 | 0.099 |
| 13 | 0.696 | 0.730 | 0.329 | 0.126 | 13 | 0.529 | 0.382 | 0.318 | 0.207 |
| 14 | 0.980 | 0.954 | 0.000 | 0.041 | 14 | 0.627 | 0.108 | 0.142 | 0.068 |
| 15 | 0.363 | 0.267 | 0.534 | 0.111 | 15 | 0.490 | 0.272 | 0.321 | 0.107 |
| 16 | 0.539 | 0.463 | 0.376 | 0.187 | 16 | 0.343 | 0.115 | 0.421 | 0.070 |
| 17 | 0.824 | 0.509 | 0.150 | 0.053 | 17 | 0.618 | 0.289 | 0.226 | 0.094 |
Pc is the proportion of correct; g and s are the item parameters involved in the DINA model, representing the probabilities of slipping and guessing, respectively; RMSEA is the root mean square error approximation.