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