Table 1.

Descriptive statistics of pre- and post-test for both groups and t-test for pre-test.

Measures	Group	Pre-test		Post-test		Pre-test
		Mean	SD	Mean	SD	t	df	p
Positive affect	Experimental	3.00	0.50	3.19	0.57	0.36	69	0.72
	Control	2.98	0.53	3.01	0.62
Negative affect	Experimental	2.03	0.67	1.98	0.57	0.10	69	0.33
	Control	1.96	0.57	1.96	0.57
Flow state	Experimental	3.14	0.62	3.31	0.45	−0.25	69	0.81
	Control	3.17	0.47	3.08	0.44
Alerting (ms)	Experimental	27.08	20.36	19.42	19.00	2.24*	69	0.03
	Control	16.51	19.40	22.34	16.47
Orienting (ms)	Experimental	18.00	23.42	18.10	22.73	−0.81	69	0.42
	Control	22.33	21.37	27.43	18.86
Conflict monitoring (ms)	Experimental	62.52	24.19	61.21	20.12	−1.04	69	0.30
	Control	68.55	24.82	62.84	20.08
Working memory accuracy (%)	Experimental	84.26	10.18	92.59	7.66	−1.17	69	0.25
	Control	86.79	7.94	90.10	8.90
Working memory reaction time (ms)	Experimental	883.30	125.64	734.47	120.09	2.76**	69	0.01
	Control	783.75	175.05	714.06	109.04

SD=standard deviation.

^*p<0.05;

^**p<0.01.