Table 1:

Summary of data included in MTwiNS analyses

	Number Lost	Participants With Usable Data
Original Sample		280 (140 sets)
Sample with Go/No-Go Behavioral Data		226
• Declined scan	14
• Ended scan before completing Go/No-Go task	11
• Too large for scanner	2
• Structural abnormality found during high-resolution scan	1
• Ineligible for study (e.g. braces)	25
• Experimenter error	1
Total Lost	54
Sample with Usable Go/No-Go Behavioral Data		215
• Go Accuracy < 90%	11
Total Lost	11
Sample with Go/No-Go Functional Imaging Data		212
• Ended scan early	1
• MRI technical error	2
Total Lost	3
Sample with Usable Functional Imaging Data		185 (from 113 sets)
• No usable structural scan	2
• Frontal lobe coverage <85%	16
• Failed visual inspection (prefrontal artifacts)	9
• >10% motion outliers identified using ART	0
Total Lost	27