A physician performs two tasks: making diagnoses and determining treatments. To reduce medical error, residents are supposed to consult their supervisors when they face uncommon circumstances. However, recent research shows that residents are reluctant to do so. This paper presents a model that...

We develop a theory of leadership that focuses on the role managers play in motivating employees through their attitude towards employees. We model a manager's attitude as her perception about employees' abilities of successfully completing challenging tasks. We show that a positive attitude...