| Pre-test | Post-test | Comparison test | ||||
M | SD | M | SD | MD | t | Sig. | |
Word number | 117.68 | 20.87 | 141.39 | 22.15 | −6.63 | −3.617 | 0.000 |
word length | 4.36 | 0.29 | 4.42 | 0.29 | −0.061 | −2.612 | 0.010 |
sentence length | 15.19 | 6.30 | 16.26 | 4.87 | −1.07 | −2.566 | 0.011 |
clause number | 8.42 | 3.32 | 9.58 | 3.83 | −1.16 | −3.718 | 0.000 |