In an earlier paper (Arnsperger and Varoufakis, 1999) we proposed solidatiry as an umbrella concept encompassing acts (or inclinations to perform them) motivated by a felling that some group (e.g. refugees) is entitled to our support independantly (a) of our sympathy (or lack therof) for its...

An experiment with the hawk-dove game showed that if players observe solely an arbitrary and trivial characteristic of their opponent (e.g. a colour label assigned randomly to each player at the outset), a pattern of discrimination may evolve (i.e. those possessing one of the two colours will...