Three essays on economic interactions under bounded rationality

The issues explored in this work concern economic interactions under bounded rationality. Each chapter considers these interactions from di erent angles. The first chapter characterizes the optimal contract designed by an ordinary pro t-maximizing monopoly when facing diversely bounded rational agents. The second chapter analyses the interaction between fully and boundedly rational agents in situations where their interests are perfectly aligned. Finally, the third chapter studies a model where a team of agents with limited problem-solving ability face a disjunctive task over a large solution space.