Language acquisition theorists
Jean aitchinson Jeanne chall Chomsky Kroll B.F. Skinner
Language and social contexts theorists
Bernstein
Labov
Milroy
Trudgill
Conversation/social contexts theorists
Brown and Levinson
Howard Giles
Irving Goffman
Grice
Language and gender theorists
Cheshire
Lakoff
Spender
Zimmerman and west
Register theorists
David crystal
Halliday
What theory did brown and levinson develop
Politeness strategies in conversation designed to save face and reduce the impact of face threatening acts.
They came up with four politeness strategies