Family-Based Interoceptive Exposure for Avoidant Restrictive Food Intake Disorder

Inclusion Criteria: Patient: * Aged 12-18 * Speaks English * Permission from pediatrician or equivalent to receive outpatient care, including that the patient does not meet criteria for hospitalization based on the American Psychiatric Association guidelines * Diagnosis of Avoidant Restrictive Food Intake Disorder, as assessed by the EDA-5 Parent: * Has a child aged 12-18 with a diagnosis of ARFID * Speaks English Exclusion Criteria: * Comorbid psychotic or bipolar disorder * Psychiatric medication initiated or with a dosage change in the two weeks prior to baseline testing * Active suicidal ideation * Major medical condition (e.g., diabetes mellitus, pregnancy) * Current substance dependence, as evidenced by tolerance and withdrawal * Evidence of anatomical findings by imaging (e.g., swallow study) that would prevent safe consumption of the shake or those with a percutaneous endoscopic gastrostomy or other similar feeding tube insertion * Children with visual or physical limitations that would preclude watching a screen and using a finger to respond with mouse clicks (e.g., blindness, epilepsy if exposure to flashing lights at certain intensities or to certain visual patterns can trigger seizures).