Adversity, Brain and Opioid Use Study

Inclusion Criteria for all groups: * Fluent in English * Able to give informed consent * Normal/corrected-to-normal vision and hearing Inclusion Criteria for Opioid Use Disorder (OUD) group: * Diagnosis of OUD * Be actively receiving buprenorphine (BUP) for opioid agonist therapy * Be free from illicit substance use for at least 2 weeks * The study will allow stable dose (\> 3 months) of commonly prescribed psychiatric medications and some sleep aids (per protocol) Inclusion Criteria for the BUP control group: * Taking BUP for chronic pain * No Substance Use Disorder (including OUD) * The study will allow stable dose (\> 3 months) of commonly prescribed psychiatric medications and some sleep aids (per protocol) Inclusion Criteria for Healthy participant group: * Not taking BUP * Free of any psychiatric or major medical conditions Exclusion Criteria for all groups: * Pregnancy * Significant medical or neurologic conditions (e.g., stroke, seizures, multiple sclerosis) * Actively suicidal * Contraindication for MRI * Inability to tolerate small, enclosed spaces without anxiety or unable to fit comfortably in the MRI scanner * Life history of schizophrenia, learning disability, attention deficit disorder, or pervasive developmental disorder * Use of substances or prescription medications that could interfere with measures of interest (per protocol) * Unable to provide informed consent * Participants who have completed other studies in our lab involving learning and memory assessments with the same/similar tasks used here (HUM00230585, HUM00121812) will not be eligible to complete the current study, due to possible learning/practice effects