Contractualism as restricted contractualism

Metaethics is dominated by views according to which moral claims are made true by either non-natural or natural properties or they express desire-like attitudes. It has been suggested that constructivism is a fourth alternative, but it remains opaque how it differs from the other views. This article first describes a clear constructivist theory based on Crispin Wright's anti-realism. It then specifies an argumentative strategy that can be used to argue against constructivist views about practical reasons. The last sections of the article finally explain how reasons and contractualism can be used to construct a new viable metaethical constructivist position about right and wrong.