Emotivism
The view first articulated by A.J. Ayer (1910-1989) in Language, Truth and
Logic that normative sentences convey no propositional content and are therefore
literally meaningless. However, Ayer maintained that such sentences served two
distinct functions: 1) they could 'evince' the emotions of the speaker, and 2)
they could arouse an emotional response in others. Hence, normative language
is emotive language.