Definition
A scalar implicature is a type of conversational implicature that arises when a speaker uses a term from a semantic scale and, by doing so, implies the negation of all stronger terms on the same scale. The classic example: saying “Some students passed” implicates “Not all students passed”, because if all had passed, a cooperative speaker would have said “all”. The inference is not logically entailed by the sentence — it is a pragmatic inference drawn from the Gricean Maxim of Quantity.
In-Depth Explanation
Scalar implicature arises from lexical scales — ordered sets of terms of increasing semantic strength, written conventionally as ⟨ weak … strong ⟩:
| Scale | Example |
|---|---|
| ⟨some, many, most, all⟩ | “Some invitees came” → not all |
| ⟨warm, hot⟩ | “The coffee is warm” → not hot |
| ⟨or, and⟩ | “You can have cake or pie” → not both (in many readings) |
| ⟨possible, likely, certain⟩ | “It’s possible she’ll come” → not certain |
| ⟨good, excellent⟩ | “The food was good” → not excellent |
| ⟨one, two, three…⟩ | “She has two children” → exactly two |
The mechanism follows from Grice’s Quantity maxim: if a speaker knew that the stronger statement was true and was being cooperative, they would have said it. By using the weaker form, they implicate its stronger alternative is not warranted. This inference is defeasible (cancellable): “Some students passed — in fact, all of them did” is not a contradiction, proving the implicature is pragmatic rather than semantic.
Scalar implicature and logical form diverge significantly. In classical logic, “some” means “at least one” — it does not exclude “all”. Natural language speakers reliably interpret “some” as “some but not all” in most contexts, creating a systematic mismatch between semantic meaning and communicated meaning. This divergence is one of the central empirical puzzles of formal and cognitive pragmatics.
Neo-Gricean and Relevance Theory accounts differ on where scalar implicature is generated. Neo-Griceans (Horn, Levinson) treat scalar implicatures as default inferences generated by generalised conversational heuristics — they operate unless something cancels them. Relevance theorists (Sperber & Wilson, Carston) treat them as context-driven optional strengthening: “some” has no automatic upper-bound implication; the “not all” reading only arises when it is relevant enough in context to be computed. This debate has generated substantial experimental research.
Psycholinguistic evidence from scalar inference studies (Noveck 2001 onwards) shows developmental effects: children perform more logically (accepting “some” as compatible with “all”) while adults derive the scalar implicature automatically. The finding suggests that scalar implicature processing requires cognitive sophistication — specifically, pragmatic reasoning beyond bare truth-conditional semantics. Adults are slower on true-but-literally-weaker scalar sentences (“Some elephants are mammals” — true but logically weak) than equally true sentences without scale alternatives, indicating processing cost.
Embedded scalars have become a theoretical flashpoint. In sentences like “Every student who read some of the books passed”, the some inside the relative clause appears to receive an implicature within the embedded context (“some but not all”), yielding the interpretation “Every student who read some but not all of the books passed.” This embedded implicature is problematic for neo-Gricean accounts, which generate implicatures at the sentence level, and has fueled syntactic theories of scalar strengthening (Chierchia, Fox, Spector).
Cross-linguistic variation in scale members is real but often overstated. The core ⟨some, all⟩ scale appears across languages studied, though the specific lexical items and their grammatical status vary. Japanese has its own scale systems: ⟨少し, かなり, とても, 非常に⟩ (sukoshi, kanari, totemo, hijō ni) for degree, and approximation expressions that interact with scalar inference differently than English counterparts.
History and Origin
The term “scalar implicature” was developed within neo-Gricean pragmatics. Laurence Horn’s 1972 UCLA dissertation first systematized scalar inference. Gazdar (1979) formalized scales within a Gricean framework. The field accelerated sharply after Noveck’s (2001) experimental work demonstrated the child/adult divergence, spawning the discipline of experimental pragmatics. Since 2000, scalar implicature has been perhaps the single most-studied phenomenon at the semantics-pragmatics interface, with hundreds of experimental and theoretical papers.
Common Misconceptions
“Scalar implicature is just common sense.” In fact, the default “some but not all” inference contradicts logical semantics, where “some” simply means “at least one.” The “common sense” reading is a pragmatic overlay that requires active reasoning, as shown by developmental psychology and processing experiments.
“The implicature is always drawn.” Context can suppress it: “Did anyone call while I was out?” “Yes, some did.” Here “some but not all” is not particularly relevant — the caller wants to know whether anyone (some ≥ 1) called. The all-or-some distinction is irrelevant to that question, so the implicature may not arise.
“‘Or’ always means exclusive or.” English or has an inclusive-or logical semantics but often gets an exclusive upper-bound implicature in context (either one thing or the other, not both). This is a scalar implicature from the ⟨or, and⟩ scale, not part of the meaning of or itself.
Criticisms and Limitations
The heated debate between neo-Gricean default accounts and Relevance-theoretic ad hoc accounts has not been decisively resolved. Experimental pragmatics results are often interpreted differently by the two camps. Chierchia’s grammatical theory of scalar implicature — treating it as a covert operator in syntax — is powerful but complex and faces empirical challenges from cross-linguistic data. The field remains productively contested.
Social Media Sentiment
Scalar implicature is a linguistics community favorite for explained-examples posts: “When you say ‘some of my friends like this movie,’ you’re implying not all of them do — even though that’s not logically required.” These explanations circulate widely in linguistics and philosophy of language online communities. Language teachers also use scalar implicature to explain why English exam multiple-choice (with “some” as an answer choice) trips up students who know logical semantics but not pragmatic inference.
Practical Application
Understanding scalar implicature helps language learners in several ways. First, it explains why hedged-sounding statements (“I had some time to prepare”) are often interpreted as meaning “not much time/not complete” — native speakers automatically draw the upper-bound implicature. Second, over-literal interpretation of scales can cause L2 speakers to misread socially signaled reluctance: “It’s possible we’ll meet this weekend” from a busy acquaintance likely implicates “I’m not counting on it” or even “probably not.”
For Japanese learners: scalar expressions in Japanese interact with politeness systems. 少し (sukoshi, “a little”) is often used to soften requests — “Could you wait a little?” — and the scalar implicature (“not a long time”) is pragmatically cooperative. Context distinguishes genuine minimizing from polite framing. This pragmatic inference is best acquired through extensive exposure to natural Japanese, as provided through listening platforms like Sakubo.
Related Terms
See Also
Research
- Horn, L. (1972). On the Semantic Properties of Logical Operators in English. University of California, Los Angeles dissertation.
- Grice, H. P. (1975). “Logic and conversation.” In P. Cole & J. Morgan (Eds.), Syntax and Semantics, Vol. 3: Speech Acts. Academic Press.
- Noveck, I. A. (2001). “When children are more logical than adults: Experimental investigations of scalar implicature.” Cognition, 78(2), 165–188.
- Chierchia, G., Fox, D., & Spector, B. (2012). “Scalar implicature as a grammatical phenomenon.” In C. Maienborn, K. von Heusinger, & P. Portner (Eds.), Semantics: An International Handbook of Natural Language Meaning, Vol. 3. Mouton de Gruyter.