Hundreds of Michigan teens and their families are helping scientists learn more about the growth and development of the brain and its impacts on behavior, mental health and much more, through a national study called ABCD. Two neuroscientists who lead the University of Michigan’s participation in the study, Chandra Sripada, M.D., Ph.D., and Mary Heitzeg, Ph.D., answer questions about how the multi-year project is going, and what it has taught researchers so far.