In 1978, Brown and Levinson had published a revised version of paper for the first time, that discussed about the stronger case in cross-cultural universals. In this paper, there was a definitive nature of their work and the wide responses. consequently, it also meant to elicit from other sociolinguistics and discourse analysis therefore the theoretical framework will now be explained and discussed in a brief.
Brown and Levinson's starting point is "the extraordinary parallelism in the linguistic minutiae of the utterances with which persons choose to express themselves in quite unrelated languages and cultures".
Their main aim is to describe and account for this parallelism, and they set about achieving it by providing evidence from three unrelated languages (British and American English, Tamil and Tzeltal) the language spoken by Mayan Indians in Chiapas, Mexico), hence proposing a theory of politeness in which specific linguistic devices universally form the realisations of underlying politeness strategies.
In order to account for the systematic elements that they have observed in language use, Brown and Levinson construct a Model Person (MP). An MP, we are told, consists of a fluent speaker of a natural language who is endowed with the properties of rationality (the ability to reason from ends to the means that will achieve them) and face.