Neurobiological and Psychological Maintenance Mechanisms Associated With Anticipatory Reward in Bulimia Nervosa

Inclusion Criteria:

Bulimia nervosa (BN) and healthy control (HC) groups:

* Right-handed
* Ability to read and speak in English

BN group only:

* Eating Disorder Examination (EDE) diagnosis of BN (i.e., at least one objective bulimic episode and one self-induced vomiting episode per week for at three months) with binge episodes always accompanied by self-induced vomiting
* Stable dose for at least 6 weeks of any recent changes in medication impacting mood, appetite, or weight

HC group only:

* No binge eating or purging episodes for the past three months on the EDE
* No current or past history of an eating disorder as diagnosed by Structured Clinical Interview for DSM-5 Disorders

Exclusion Criteria:

* History of gastric bypass surgery
* Medical condition acutely affecting eating behavior and/or weight (i.e., pregnancy, lactation, thyroid disease)
* Current medical or psychiatric instability (i.e., hospitalization required in the past three months)
* Lifetime history of psychosis or bipolar disorder
* History of neurological disorder or injury (i.e., stoke, head injury with \>10 minutes loss of consciousness)
* Current substance use disorder
* BMI less than 19 kg/m\^2
* Acute suicidality requiring hospitalization
* fMRI exclusions as specifiedd by the Center for Magnetic Resonance Research
* Food allergy that cannot be accommodated through substitutions to the laboratory test snack