good and poor choices before we act and modulates mood reactively without thinking clearly engaging in risky behavior American Academy of Child & Adolescent Psychiatry (2016) American Academy of Child & Adolescent Psychiatry American Academy of Child & Adolescent Psychiatry reactively without thinking clearly engaging in risky behavior American Academy of Child & Adolescent Psychiatry American Academy of Child & Adolescent Psychiatry American Academy of Child & Adolescent Psychiatry AACAP 2016 Teenage Brain Development article American Academy of Child & Adolescent Psychiatry American Academy of Child & Adolescent Psychiatry unique brain growth American Academy of Child & Adolescent Psychiatry American Academy of Child & Adolescent Psychiatry American Academy of Child & Adolescent Psychiatry Teen Brain: Behavior, Problem Solving, and Decision Making American Academy of Child & Adolescent Psychiatry American Academy of Child & Adolescent Psychiatry the brain development "Teen Brain: Behavior, Problem Solving, and Decision Making" before we act and modulates mood