Specific Aim 1: To explore the impact of work burnout on cognitive performance and psychological functioning in medical residents. Mounting evidence points towards the conclusion that work burnout can have a negative effect on psychological functioning in medical residents. We will test the working hypothesis that work burnout will be associated with poor cognitive performance, poor sleep quality, and high negative affectivity. Our approach is to use self-reported cognitive impairment and cognitive performance tasks designed to measure three basic processes underlying executive control: (i) updating, (ii) inhibition, and (iii) switching. Negative affective symptoms will be measured using validated psychometric scales for depression (Beck Depressive Inventory; BDI), anxiety (State-Trait Anxiety Inventory; STAI), and anger (State-Trait Anger Expression Inventory-2; STAEI-2). Sleep quality will be assessed via the Pittsburgh Sleep Quality Index (PSQI).