 Hybrid-expressivist theories can be thought of as another sort of borderline case but for a different reason. These theorists combine the positive claims of expressivism – that moral sentences are conventional devices for the expression of pro-attitudes and that moral attitudes are (partly) non-cognitive with features of cognitivism – that moral sentences predicate properties and that moral attitudes are (partly) cognitive.  There are a variety of ways of combining these ideas and various extant theories adopt many of the options.