Conversational Implicature

📅 Last reviewed: Nov 12, 2024 ⏱️ 8 min read Pragmatics Philosophy of Language Semantics

Conversational implicature is a pragmatic concept introduced by philosopher H. P. Grice in 1957 to describe meaning that is implied by a speaker but not explicitly stated in the literal utterance. Listeners infer these meanings by assuming that speakers adhere to—or strategically flout—shared conversational norms.

📑 Contents

Definition & Core Concept

Conversational implicature refers to the gap between what is literally said and what is communicatively intended. Unlike semantic meaning, which is encoded in linguistic rules, implicature is context-dependent and arises from the listener's inference processes.1

Key Distinction: What is said (truth-conditional content) vs. what is implied (pragmatic enrichment). Implicatures are cancellable, non-detachable, and calculable—properties that distinguish them from literal meaning or conventional implicature.

Historical Background

The concept was formalized by Paul Grice in his seminal 1957 paper "Meaning" and later expanded in the 1975 William James Lectures at Harvard, published posthumously in Logic and Conversation (1989). Grice sought to explain how humans communicate far more than the sum of their literal words, bridging philosophy of language, linguistics, and cognitive science.2

The Cooperative Principle

Grice proposed that conversation is governed by a fundamental assumption of cooperation:

"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."3

This principle is operationalized through four categories of conversational maxims. Implicatures arise when speakers observe, violate, or deliberately flout these maxims, prompting listeners to reconstruct intended meaning.

The Four Maxims

Maxim	Guideline	Typical Implicature Trigger
Quality	Do not say what you believe to be false or lack adequate evidence for.	Irony, sarcasm, hyperbole
Quantity	Be as informative as required, but not more.	Understatement, vague quantifiers ("some")
Relation	Be relevant.	Topic shifts, non sequiturs interpreted as indirect refusal
Manner	Be clear, brief, and orderly; avoid obscurity and ambiguity.	Euphemisms, deliberate vagueness, indirect speech acts

Types of Implicature

1. Generalized vs. Particularized

Generalized conversational implicatures arise in ordinary contexts without special assumptions. For example, "Some students passed" typically implicates "Not all students passed", regardless of context.4

Particularized conversational implicatures depend heavily on specific situational context. If Person A asks, "Where's the meeting?" and Person B replies, "The cat is on the keyboard," the implicature ("The meeting has been canceled") only emerges from shared contextual knowledge.

2. Conventional vs. Conversational

Grice distinguished implicature from conventional implicature (e.g., "He is poor but honest", where "but" conventionally implicates contrast). Conventional implicatures are tied to lexical items and cannot be canceled, whereas conversational implicatures are dynamically computed.

Examples & Mechanisms

Example: Flouting Quantity

Teacher A: "How did John's exam go?"

Teacher B: "Well, his handwriting is excellent."

→ Implicature: John likely failed, but B avoids direct criticism by flouting the maxim of Quantity/Relation.

Example: Indirect Speech Act

Guest: "It's getting cold in here."

→ Implicature: Please close the window / turn up the heat. The literal statement about temperature is strategically used to request action.

Listeners compute implicatures through a recursive process: recognizing a maxim violation, assuming cooperative intent, and inferring the most plausible meaning that restores conversational rationality.5

Criticisms & Developments

While foundational, Gricean theory has faced significant refinement:

Relevance Theory (Sperber & Wilson, 1986): Argues that relevance, not maxims, drives inference. Listeners optimize cognitive effort against contextual effects.
Semantic Encroachment: Some linguists argue certain "implicatures" (e.g., "stop" implicating prior motion) are encoded semantically, not pragmatically.
Computational Modeling: Modern NLP and pragmatic inference models (e.g., Rational Speech Act theory) formalize implicature computation probabilistically.6

Despite debates, conversational implicature remains central to pragmatics, AI dialogue systems, legal interpretation, and cross-cultural communication studies.

References

Grice, H. P. (1975). Logic and Conversation. In Syntax and Semantics 3: Speech Acts (pp. 41–58). Academic Press.
Katz, J. J. (1977). Linguistic Inquiry: The Formal Approach. Academic Press.
Sperber, D., & Wilson, D. (1986). Relevance: Communication and Cognition. Harvard University Press.
Levinson, S. C. (1983). Pragmatics. Cambridge University Press.
Bartlett, S. C., & Clark, N. (2014). Conversational Implicature. Stanford Encyclopedia of Philosophy.
Bergen, L., & Goodman, N. D. (2014). Implicature, Plausibility, and the Synergy between Linguistics and Cognitive Science. Cognitive Science, 38(1), 131–155.