| Average score (pre-test) | Average score (post-test) | t | Sig |
Experimental group | 56.71 | 72.68 | 7.10 | .000 |
Control group 1 | 54.83 | 64.46 | 7.12 | .000 |
Control group 1 pre-test versus post-test | 54.83 | 64.46 | 14.79 | .000 |
Control group 2 | - | 62.91 | 7.25 | 000 |