Social conventions and norms can be modeled as equilibria of coordination games. It is argued that the critical mass necessary for a society to move from one convention, that is from one equilibrium, to another changes with changes in the population structure due to generation shifts. A scandal...

A model is developed in which parents choose the language or languages in which their children are brought up. Their choice of language community into which children are socialized depends both on the practical value of the language as a means of communication and on the emotional attachment of...