Social interactions in the Prisoner’s Dilemma Game: Implementation of a multinomial model for the analysis of cooperation and punishment behavior

合作是人类社会的一个核心方面。人们利用惩罚来促进合作行为，建立或维持合作规范。惩罚通常对受惩罚的个人来说是昂贵的，但也为惩罚者承担成本。研究合作行为的经典实验范式是囚徒困境博弈，它可以与惩罚选项相结合。从经济学的角度来看，昂贵的惩罚似乎并没有直接的利润。然而，即使在一次尝试的互动中，人们也会投资于昂贵的惩罚其他人。多项合作-惩罚模型使合作与惩罚分开分析和解释成为可能。在合作参数的条件下，四种不同类型的惩罚被参数化。道德的，虚伪的，非理性的和反社会的惩罚是不同的，这取决于参与者自己的行为和合作伙伴的行为（每个人都可以合作或背叛）在囚徒困境游戏。本课题的目的是进一步拓展合作惩罚模型的实证基础和理论范围，从惩罚者的角度探讨合作与惩罚的研究问题。

Cooperation is a central aspect of human societies. People use punishment to promote cooperative behaviour and establish or sustain a cooperative norm. Punishment is usually costly for the punished individual but also bears costs for the punisher. A classic experimental paradigm for investigating cooperative behaviour is the Prisoner’s Dilemma Game which can be combined with a punishment option. From an economic point of view costly punishment does not seem directly profitable. However, people even in one-trial interactions invest to costly punish other individuals. The multinomial Cooperation-Punishment-Model makes it possible to analyse and to interpret cooperation and punishment separately. Conditional on a parameter for cooperation four different types of punishment are parameterized. Moralistic, hypocritical, irrational and antisocial punishment are differentiated depending on the participants’ own behaviour and the partners’ behaviour (each can cooperate or defect) in the Prisoner’s Dilemma Game. The goal of the current project is to further extend the empirical basis and the theoretical range of the Cooperation-Punishment-Model and investigate research questions on cooperation and punishment from the point of view of the punishing individual.