Table 4 Mean scores and discrimination indices of the experimental tests
| Â | Â | 3-option test | 4-option test | 5-option test |
|---|---|---|---|---|
Mean score | Structure (/31) | 16.19 | 14.40 | 13.98 |
| Â | Reading (/8) | 4.19 | 3.85 | 3.51 |
| Â | Overall (/39) | 20.38 | 18.25 | 17.49 |
SD of mean scores | Structure | 6.57 | 7.12 | 6.89 |
| Â | Reading | 1.77 | 1.51 | 1.62 |
| Â | Overall | 7.87 | 7.94 | 7.97 |
Mean | Structure | Â | Â | Â |
Discrimination | Rpbis | 0.45 | 0.48 | 0.54 |
Coefficients | DI | 0.53 | 0.56 | 0.47 |
| Â | Reading | Â | Â | Â |
| Â | Rpbis | 0.47 | 0.43 | 0.47 |
| Â | DI | 0.54 | 0.45 | 0.42 |