Discrimination of born and unborn females is a well documented phenomenon in countries such as India, China, Taiwan or Korea. Empirical studies provide support for both an additive and a substitutive relationship between prenatal and postnatal discriminatory practices against females. We...

We model a situation where a set of agents must rank themselves based on their opinions. Each agent submits a message and a function determines the social ranking. We are interested in impartial social ranking functions, that is, those where the message of an agent can not change any social...