A detailed consideration of the invalidating factors--duress, undue influence, misrepresentation, and unconscionable bargains--which may be present in a contract, form the core of Unequal Bargaining . Cartwright sets these factors firmly in the context of the formation of the contract, as well as when and how it is constructed. He then identifies the unifying principle of these vitiating factors, based on the responsibility of each party involved at the moment of contracting.