This paper provides a general overview of theories and tools to model individual and collective decision-making. In particular, stress is laid on the interaction of several decision-makers. A substantial part of this paper is devoted to utility maximization and its application to collective...

Narratives pervade almost any aspect of our life and play a particularly important role in moral and prosocial decision-making. We study how positive (stories in favor of a prosocial action) and negative (stories in favor of a selfish action) narratives influence prosocial behavior. Our main...