This paper provides an argument for the advantage of a preference for identity-consistent behaviour from an evolutionary point of view. Within a stylised model of social interaction, we show that the development of cooperative social norms is greatly facilitated if the agents of the society...

This paper reports the results from a statistical analysis of pharmaceutical price negotiations in Germany, where the pricing system was changed in 2011 in order to tie prices more to the benefits of the pharmaceuticals. A multiple linear regression of 187 pharmaceuticals which were assessed...