Item 1 | Item 2 | Item 3 | Item 4 | Item 5 | Item 6 | |
---|---|---|---|---|---|---|
Mean item difficulty (SD) | ||||||
IG (N = 36) | 0.94 (0.23) | 0.80 (0.40) | 0.75 (0.44) | 0.43 (0.51) | 0.86 (0.35) | 0.92 (0.28) |
CG (N = 36) | 0.68 (0.48) | 0.86 (0.36) | 0.54 (0.51) | 0.36 (0.49) | 0.5 (0.51) | 0.82 (0.39) |
Discriminatory power | ||||||
IG (N = 36) | 0.17 | 0.33 | 0.41 | 0.45 | 0.27 | 0.23 |
CG (N = 36) | - 0.15 | - 0.04 | 0.28 | 0.23 | 0.10 | 0.14 |