Youth were imaged on a 3.0-Tesla General Electric CXK4 MR system with an 8-channel phase-array head coil (General Electric Medical System, Milwaukee, WI, USA). Participants had very minimal lifetime histories of personal substance use, and no participant had used alcohol or any other intoxicant for the 50 days prior to scanning. Participants were placed comfortably on the scanner table and the head was stabilized with foam cushions (NoMoCo Pillow, La Jolla, CA). Scan sessions involved a 10-second scout scan to assure good head placement and slice selection covering the whole brain, and a sagittally-acquired high-resolution 3d T1-weighted anatomical image (FOV 24 cm, 256 × 256 × 192 matrix, 0.94 × 0.94 × 1 mm voxels, 176 slices; TR=8 ms, TE=3 ms, TI=450 ms, flip angle 12°, 7:19 minutes). Whole-brain echo planar images were collected axially (FOV 24 cm, 64 × 64 matrix, 3.75 × 3.75 × 3.8 mm voxels, TR = 2000 ms, TE = 30 ms, 90° flip angle, 32 slices no gap, slice thickness = 3.8 mm) as an event-related visual working memory (VWM) task was administered (Luck
