Table 6 . t-test result for the task scores.

		Levene’s test for equality of variances		t-test for equality of means
		F	Sig.	t	df	Sig. (2-tailed)	Mean Diff.	Std. Error Diff.	95% confidence interval of the difference
									Lower	Upper
Task score	Equal variances assumed	11.284	0.002	6.119	48	0.000	40.560	6.629	27.232	53.888
	Equal variances not assumed			6.119	36.228	0.000	40.560	6.629	27.120	54.000