Effect of Social Isolation on the Role of Pavlovian Mechanisms for Control Over Alcohol Use

Inclusion Criteria: * Males and females between 18-65 years of age, * AUD subjects: meet 4 or more criteria for DSM-5 alcohol-use disorder (not requiring withdrawal as assessed by an independent psychiatrist), * Currently using alcohol without a desire for abstinence, * Ability to consent to the study and complete the questionnaires. * Sufficient language skills: German * Availability between 3pm-6pm on 2 consecutive days, * existing health insurance Exclusion Criteria: * Lifetime diagnosis according to DMS-5 for a: Bipolar disorder, schizophrenia, schizophrenia spectrum disorder, substance dependence except for alcohol, nicotine, cannabis, and/or methamphetamine * Currently meeting DSM-5 diagnostic criteria for depressive episode, suicidal ideation, * History of traumatic brain injury or severe neurological disease (such as dementia, Parkinson's disease, multiple sclerosis) * Pregnancy or breastfeeding, * Ingestion of medications known to interact with the CNS in the 10-day period prior to study participation or less than 4 half-lives after last ingestion (rapid urine test), * Color vision deficiency