'Bygones are bygones' might seem to be an analytic truth, lacking any substantive content. Yet, economists think that, when they state that bygones are bygones, they are asserting something interesting and important. Furthermore, others would argue that the statement 'bygones are bygones', when...

We model the choice of leaders of groups within society, where leaders influence both the mode of interaction between groups (either peaceful compromise or costly conflict) and the outcome of these interactions. Group members may choose leaders strategically/instrumentally or they may choose...

A growing literature has focussed attention on ‘expressive’ rather than ‘instrumental' behaviour in political settings - particularly voting A common criticism of the expressive idea is that its myriad possibilities make it rather ad hoc and lacking in both predictive and normative bite....

We construct models of group formation designed to capture some of the key features of political and social competition. The models draw on the ‘citizen candidate’ approach and allow competition to be modelled as either compromise - where all groups influence outcomes; or conflict -...