Table 3.

Behavioral performance measures by concussion status (M ± SD).

	Concussed	Control	p-value
ImPACT
Verbal memory (% correct)	90.5 ± 8.5	93.0 ± 7.6	.31
Visual memory (% correct)	76.6 ± 12.4	76.5 ± 12.7	.97
Motor speed (composite score)	39.9 ± 5.3	40.1 ± 5.6	.93
Reaction time (ms)	575.4 ± 71.9	620.3 ± 98.1	.09
Impulse control (composite score)	4.6 ± 2.3	5.9 ± 6.4	.39
Flanker performance
Response accuracy (%)
Congruent	97.8 ± 2.7	95.6 ± 7.3	.43
Incongruent	85.2 ± 10.0	87.2 ± 10.5	.49
Reaction time (ms)
Congruent	409.3 ± 47.4	428.8 ± 48.5	.17
Incongruent	501.2 ± 63.8	514.6 ± 58.5	.46
Post-error accuracy (%)	10.4 ± 12.7	9.3 ± 6.3	.71
Post-error slowing (ms)	38.5 ± 47.8	39.7 ± 38.2	.93
CVRT (ms)	0.53 ± 0.02	0.53 ± 0.01	.87

Note. ImPACT = Immediate Post-Concussion Assessment and Cognitive Testing; CVRT = coefficient of variation of reaction time.