Foregrounding Background Theories in Wide Reflective Equilibrium

Sammanfattning: This thesis deals with two species of a very well known and popular method of moral justification called the method of reflective equilibrium. These two species are narrow and wide reflective equilibrium (NRE/WRE). More specifically, the thesis looks at the roles so called background theories are expected to play in WRE. The use of background theories distinguishes WRE from NRE. Whether background theories can fulfil all these roles, and whether these roles are needed at all, is discussed. One conclusion is that whether WRE is preferable to NRE or not, depends to large degree on how the key concept of coherence is understood. Given a common understanding of coherence as something thicker than mere logical consistency though, WRE is clearly preferable to NRE as a method of justification.