Stress and Anxiety Effects on Valuation

Inclusion Criteria: Aims 1-3: To be eligible for participation in this study, an individual must meet all of the following criteria: * 18-65 years of age * Able to speak, read, and write fluently in English * Be willing and able to follow study procedures and provide informed consent. Aim 4: To be eligible for participation in this study, an individual must meet all of the following criteria: * 18-65 years of age * Diagnosis of GAD * Able to speak, read, and write fluently in English * Be willing and able to follow study procedures and provide informed consent. Exclusion Criteria: Aims 1-3: Individuals will be excluded from participation if any of the following criteria are met: * History of or medication for neurologic or psychiatric disease * High-blood pressure or heart condition * Diabetes, food allergies, metabolic disorders or history of eating disorder * Use of corticosteroids or beta-blockers * Pregnancy Aim 4: Individuals will be excluded from participation if any of the following criteria are met: * High-blood pressure or heart condition * Diabetes, food allergies, metabolic disorders or history of eating disorder * Use of corticosteroids or beta-blockers * Lifetime history of bipolar disorder or any psychotic disorder; substance use disorder in past 3 months; eating disorder in past 6 months; current major depressive disorder (past is allowed) * Active suicidal ideation with plan and intent (indicated by score \>=4 on the Columbia Suicide Severity Scale) * Not on stable dose of psychiatric medication for at least 4 weeks prior to study participation * Pregnancy