TABLE 7.

Study 2—between-group comparison: performance at coding tasks at T1 (pre-test) and T2 (post-test).

		Control	Experimental	Independent	Cohen’s d
		M (SD)	M (SD)	samples t-test
Planning	T1pre–test	9.77 (3.62)	7.42 (4.36)	1.81	–0.59
time Coding	T2post–test	8.46 (2.47)	7.78 (3.80)	0.65	–0.21
Accuracy	T1pre–test	5.58 (1.17)	6.05 (1.08)	–1.30	0.42
Coding	T2post–test	5.21 (1.08)	7.16 (0.96)	–5.87∗∗∗	1.91

^∗∗∗p < 0.001. Adjusted p = 0.02 after Bonferroni corrections.