Siblings and all the lateral relationships that follow from them are clearly important and their interaction is widely observed, particularly in creative literature. Yet in the social, psychological and political sciences, there is no theoretical paradigm through which we might understand them.

Siblings and all the lateral relationships that follow from them are clearly important and their interaction is widely observed, particularly in creative literature. Yet in the social, psychological and political sciences, there is no theoretical paradigm through which we might understand them.