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Cooperative principle

Pragmatics of conversational communication

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Through Social science, Linguistics and Rationality

The philosopher of language Paul Grice introduced the concept in his pragmatic theory:

Make your contribution such as is required, at the stage at which it occurs, by the accepted purpose or direction of the talk exchange in which you are engaged.

These are Grice's four maxims of conversation or Gricean maxims: quantity, quality, relation, and manner. They describe the rules followed by people in conversation. Applying the Gricean maxims is a way to explain the link between utterances and what is understood from them.

Though phrased as a prescriptive command, the principle is intended as a description of how people normally behave in conversation. Lesley Jeffries and Daniel McIntyre (2010) describe Grice's maxims as "encapsulating the assumptions that we prototypically hold when we engage in conversation." The assumption that the maxims will be followed helps to interpret utterances that seem to flout them on a surface level; such flouting often signals unspoken implicatures that add to the meaning of the utterance.

Grice's maxims

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. Applying the Gricean maxims is therefore a way to explain the link between utterances and what is understood from them.

According to Grice:

Our talk exchanges do not normally consist of a succession of disconnected remarks, and would not be rational if they did. They are characteristically, to some degree at least, cooperative efforts; and each participant recognizes in them, to some extent, a common purpose or set of purposes, or at least a mutually accepted direction.

This purpose or direction may be fixed from the start (e.g., by an initial proposal of a question for discussion), or it may evolve during the exchange; it may be fairly definite, or it may be so indefinite as to leave very considerable latitude to the participants (as in a casual conversation). But at each stage, some possible conversational moves would be excluded as conversationally unsuitable.

We might then formulate a rough general principle which participants will be expected (ceteris paribus) to observe, namely: Make your conversational contribution such as is required, at the stage at which it occurs, by the accepted purpose or direction of the talk exchange in which you are engaged. One might label this the Cooperative Principle. [emphasis added]

On the assumption that some such general principle as this is acceptable, one may perhaps distinguish four categories under one or another of which will fall certain more specific maxims and submaxims, the following of which will, in general, yield results in accordance with the Cooperative Principle. Echoing Kant, I call these categories Quantity, Quality, Relation, and Manner.

Maxim of quantity (informativity)

The maxim of quantity is: be informative.

Submaxims:

  1. Make your contribution as informative as is required (for the current purposes of the exchange).
  2. Do not make your contribution more informative than is required.

In his book, Grice uses the following analogy for this maxim: "If you are assisting me to mend a car, I expect your contribution to be neither more nor less than is required. If, for example, at a particular stage I need four screws, I expect you to hand me four, rather than two or six."

Maxim of quality (truth)

The maxim of quality is: be truthful.

Supermaxim:

  • Try to make your contribution one that is true.

Submaxims:

  1. Do not say what you believe is false.
  2. Do not say that for which you lack adequate evidence.

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:

  1. Avoid obscurity of expression — i.e., avoid language that is difficult to understand.
  2. Avoid ambiguity — i.e., avoid language that can be interpreted in multiple ways.
  3. Be brief — i.e., avoid unnecessary verbosity.
  4. Be orderly — i.e., provide information in an order that makes sense, and makes it easy for the recipient to process it.

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