This dissertation comprises of three independent essays which introduce novel psychologically inspired process models and examine their implications for individual, collective or market behavior. The first essay studies multi-attribute choice as a guided process of search. It puts forward a...

The thesis answers several questions concerning how people behave in an economic context if behavioral norms and rules are not obvious. In particular, it is investigated how subjects behave if other people in the role of third parties are involved or if the subjects themselves have the role of...