Table 3.

Descriptive statistics for scanner task performance.

Task	Performance measure	Description	n	M	SD	Range
Flexibility	Accuracy	Proportion correct	95	85.76 %	9.89 %	55.41–98.65 %
	RT	Mean RT	95	1057 ms	171.86 ms	579.80–1409.80 ms
	Errors	Mean total number of error trials	95	10.75 trials	7.93 trials	1–34 trials
Inhibition	Stop accuracy	Proportion correct, stop trials	218	55.36 %	4.37 %	37.50–70.31 %
	Inhibition RT	Stop signal RT	218	230.30 ms	63.36 ms	99.44–463.40 ms
	Inhibition SSD	Stop signal delay	218	412.7 ms	103.10 ms	100.00–675.00 ms
	Stop errors	Mean total number of failed stop trials	218	22.10 trials	7.41 trials	10–39 trials
Reading	Accuracy	Proportion correct	118	83.38 %	11.96 %	50.0–98.96 %
	RT	Mean RT	118	3998 ms	835.33 ms	1725.18–6234.9 ms
	Errors	Mean total number of error trials	118	13.66 trials	8.67 trials	2–45 trials

Notes. Exclusionary criteria for task performance required, per run, > 50% flexibility task accuracy, > 50% inhibition “Go” accuracy, > 50 ms SSRT, and > 50% reading task accuracy, but at least 1 error across all usable runs. RT = response time; SSD = stop signal delay.