Fig. 1
Illustration of the MID and SRT tasks. a Schematic of the monetary incentive delay task (MID) used in this study showing each phase of a particular trial including presentation of the number of starts a child could earn on a specific trial (screen 1) followed by the child’s response (screen 2) and the feedback (hit or miss—screens 3 and 4). Presentation time was modified based on each child’s performance on a practice task. Adapted with permission from ref. 34. All rights reserved. b Schematic of the serial reaction time task showing two sample trials. On each trial a number (1–4) appeared for 800 ms, the child simply pressed the button on the keyboard that corresponded with that number. Next feedback occurred—a smiley face and pleasant sound if the keyboard press matched the presented number and a frowny face and unpleasant sound if the press did not match the presented number
