Authority in Language explores the perennially topical and controversial notion of correct and incorrect language.James and Lesley Milroy cover the long-running debate over the teaching of Standard English in Britain and compare the language ideologies in Britain and the USA, involving a discussion of the English-Only movement and the Ebonics controversy. They consider the historical process of standardisation and its social consequences, in particular discrimination against low-status and ethnic minority groups on the basis of their language traits.