Additional Study Information: People with bulimia nervosa engage in risky behaviors more often than people without this disorder. We are researching the neurobiological underpinnings of risky decision-making in bulimia nervosa. As a participant in this study, your teen would: (1) complete a series of questionnaires and interviews, (2) complete an MRI scan (no radiation), and (3) complete computer tasks. Some procedures are done remotely, but your teen would come to our lab at the New York State Psychiatric Institute (NYSPI) at Columbia University Irving Medical Center for a half day. We are looking for teens with bulimia nervosa ages 13 through 17. Your teen will be compensated up to $172. If your teen is interested in and eligible for this study, your teen may receive treatment for bulimia nervosa at no cost at NYSPI. For more information and to see if your teen qualifies, please call the Columbia Center for Eating Disorders at 646-774-8066.