Subjects were administered a comprehensive standardized neuropsychological test battery in a single session by a trained examiner who was blind to subject group. Informed written consent and assent were obtained from all subjects and primary caregivers prior to testing. All children were asked to abstain from medication on the day of testing, however not all subjects were medication naïve and not all were able to abstain during testing. Incentive was provided to both children and caregivers for participation. The Institutional Review Board (IRB) at San Diego State University and other CIFASD sites approved this study.
