We're enrolling autistic children ages 4-7 yrs. to participate in our Duke Autism HERO study, with an aim to build a deeper understanding of brain development and the overlap between autism, ADHD, and anxiety. What we learn could lead to potential new interventions or treatments for children on the spectrum. Our Duke Autism HERO participants will receive an official "Duke Research Superhero" certificate to take home to show their friends, family, and teachers.