Table 2.

Task performance

	Control	ADHD	F	Effect Size (95% CI)
RT (ms)	365.61 (38.81)	362.93 (47.85)	0.07	0.06 (−22.28–16.92)
SDRT (ms)	79.13 (22.54)	88.94 (26.60)	3.10†	0.40 (1.28 – −20.91)
errors of commission (%)	3.82 (1.55)	4.81 (1.62)	7.50**	0.62 (0.27 – 1.70)
errors of omission (%)	1.81 (3.08)	4.17 (6.79)	3.99*	0.45 (0.006 – 4.72)
accuracy (%)	94.36 (4.18)	91.02 (7.63)	5.84*	0.54 (−6.10 – −0.59)
Off-task trials only
RT	365.22 (48.04)	350.13 (48.04)	1.83	0.31 (−38.27 – 6.44)
SDRT	34.94 (15.73)	37.61 (22.03)	0.36	0.14 (0.46 – 14.54)
errors of omission	2.17 (4.11)	6.23 (9.04)	6.08*	0.58 (0.45 – 7.15)
accuracy	97.83 (4.11)	93.77 (9.04)	6.08*	0.58 (−7.15 – −0.45)
On-task trials only
RT	376.14 (46.95)	365.82 (56.50)	0.78	0.20 (−40.36 – 8.01)
SDRT	26.83 (13.26)	29.22 (19.20)	0.41	0.14 (−2.47 – 14.11)
errors of omission	1.33 (2.32)	3.56 (6.01)	4.85*	0.49 (3.00 – 39.16)
accuracy	98.67 (2.32)	96.44 (6.01)	4.85*	0.49 (−39.16 – −3.00)

^†p < 0.1

^*p < .05;

^**p < .01