Table 2.

Behavioral performance on the stop signal task (n = 103).

	Range	Mean ± Standard deviation
Median goRT	315–784 ms	589 ± 101 ms
Mean goRT	335–782 ms	595 ± 94 ms
SSRT	98–287 ms	204 ± 34 ms
GS%	84.5–100%	95.8 ± 3.6%
SS%	44.9–57.8%	50.5 ± 2.3%
FP effect (effect size)	−0.96−6.04	2.38 ± 1.64
PES (effect size)	−2.41−7.59	2.04 ± 1.71

Note: goRT: go trial reaction time; SSRT: stop signal reaction time; GS%: percentage of go success trials in all go trials; SS%: percentage of stop success trials in all stop trials; FP: fore-period; PES: post-error slowing. Effect sizes rather than mean changes were computed for FP effect and PES to account for slight variation in the number of trials between participants.