Table 2. Independent-samples t-test based on alerting level groups.

	t-test for Equality of Means
	t	df	Sig.(2-tailed)	MD	SED
Alerting	14.655	110	.000	29.79	2.03
Orienting	.659	110	.511	2.58	3.92
EC	−.758	110	.450	−3.72	4.90
CAE	3.591	110	.000	21.22	5.91
RPE	−2.511	110	.013	−25.96	10.34
Conflict	−.362	110	.718	−1.23	3.41
Mean RT	.279	110	.781	3.31	11.88
Error	−2.521	110	.013	−.02	.01

NB. EC  =  executive control; CAE  =  conflict adaptation effect on change trials; RPE  =  repetition priming effect on the response or S-R repetition trials; conflict  =  congruency effects in the flanker task; RTs  =  reactive times in the task; and error  =  error rate in the task, respectively.