Demographics and cognitive data

Demographic data were collected on the same day as the MRI scans through a questionnaire administered to the participant’s caregiver, which included information about participant ethnicity, living situation, household income, etc. In addition, participants underwent an approximately 30-minute cognitive assessment using the National Institutes of Health Toolbox Cognition Battery (https://www.healthmeasures.net/explore-measurement-systems/nih-toolbox/intro-to-nih-toolbox/cognition), administered on an iPad by a trained research assistant. Tests included the List Sorting Working Memory Test, Picture Sequence Memory Test, Flanker Inhibitory Control and Attention Test, and Dimensional Change Card Sort Test.