In this paper it is argued that whether cooperation is established in a prisoner's dilemma-like situation is determined by cognitive learning processes. To prove this claim a simulation model is build. This model is based on knowledge about the cognitive learning process that has been gained in...

Simulations have become a common tool to study the implications of theoretical models. In addition, computational approaches are frequently used in statistics to adapt models to reality. We aim to merge these approaches. To obtain robust results with significant validity from simulations,...

This paper studies the frequency of observing a certain number of firms or employees in a region for a given industry. Various predictions for these frequencies are deduced from theoretical considerations. Then, the empirical distributions of 198 industries in Germany are analysed. It is found...