The concept of the cooperative principle was introduced by the linguist
Paul Grice in his
pragmatic theory. Grice researched the ways in which people derive
meaning from language. In his essay
Logic and Conversation (1975) and book
Studies in the Way of Words (1989), Grice outlined four key categories, or maxims, of conversation—quantity, quality, relation, and manner—under which there are more specific maxims and sub-maxims. These describe specific
rational principles observed by people who follow the cooperative principle in pursuit of effective communication. In his book, Grice uses the following analogy for this maxim: "I expect your contributions to be genuine and not spurious. If I need sugar as an ingredient in the cake you are assisting me to make, I do not expect you to hand me salt; if I need a spoon, I do not expect a trick spoon made of rubber."
Maxim of relation (relevance) The maxim of relation is:
be relevant: the information provided should be relevant to the current exchange and omit any irrelevant information. In his book, Grice uses the following analogy for this maxim: "I expect a partner's contribution to be appropriate to the immediate needs at each stage of the transaction. If I am mixing ingredients for a cake, I do not expect to be handed a good book, or even an oven cloth (though this might be an appropriate contribution at a later stage)." With respect to this maxim, Grice writes,Though the maxim itself is terse, its formulation conceals a number of problems that exercise me a good deal: questions about what different kinds and focuses of relevance there may be, how these shift in the course of a talk exchange, how to allow for the fact that subjects of conversations are legitimately changed, and so on. I find the treatment of such questions exceedingly difficult, and I hope to revert to them in later work.
Maxim of manner (clarity) The maxim of manner is:
be clear. Whereas the previous maxims are primarily concerned with
what is said, the maxims of manner are concerned with
how it is said. Supermaxim: •
Be perspicuous. Submaxims: • Avoid obscurity of expression — i.e., avoid language that is difficult to understand. • Avoid
ambiguity — i.e., avoid language that can be interpreted in multiple ways. • Be brief — i.e., avoid unnecessary
verbosity. • Be orderly — i.e., provide information in an order that makes sense, and makes it easy for the recipient to process it. ==Maxims in practice==