Context-Sensitive Expressions
Context-sensitive expressions are words or phrases whose meaning shifts depending on the situation they're used in. Pronouns like "I" and "you," demonstratives like "this" and "that," and temporal words like "now" and "yesterday" all get their specific meaning from who's talking, when, and where.
These expressions sit right at the boundary between semantics and pragmatics, which makes them a central topic in this unit. They challenge traditional meaning theories because you can't fully determine what they mean just by looking at the words themselves. You also need information about the context of the utterance.
Context-Sensitive Expressions
Context-sensitive expressions in linguistics
A context-sensitive expression is any linguistic item whose interpretation depends on the context in which it's used. The word "I" doesn't refer to one fixed person; it refers to whoever is currently speaking. That's what makes it context-sensitive.
Common categories include:
- Pronouns ("I," "you," "she") — their referent changes depending on who is speaking, who is being addressed, or who has been mentioned
- Demonstratives ("this," "that," "these") — they pick out objects relative to the speaker's position or focus of attention
- Indexicals ("here," "now," "today") — they anchor meaning to the time and place of the utterance
These expressions make communication efficient. Instead of repeating a full noun phrase every time, you can say "she" or "it" and let context do the work. They also let speakers refer directly to the immediate situation without lengthy descriptions.
Factors influencing context-sensitive interpretation
Several extralinguistic factors determine how a context-sensitive expression gets interpreted:
- Speaker and addressee — "I" always refers to the speaker, and "you" to the addressee. If a different person starts talking, "I" now picks out someone new, even though the word hasn't changed.
- Time of utterance — "Yesterday" said on a Tuesday means Monday. Said on a Friday, it means Thursday. Temporal expressions are interpreted relative to when the utterance occurs.
- Place of utterance — "Here" said in a classroom refers to that classroom. Said in a park, it refers to the park. Spatial expressions are anchored to the speaker's location.
- Discourse context — Anaphoric expressions like "he," "she," and "it" depend on what's already been said. In "Maria left early. She was tired," "she" refers back to Maria because Maria is the antecedent established in the prior sentence.
- Shared knowledge between interlocutors — Speakers and hearers rely on common ground (mutual beliefs and shared information) to resolve ambiguity. If two friends both know only one person named "Alex," saying "Alex called" requires no further clarification. Without that shared knowledge, the hearer might need more context.
Context-Sensitivity and Meaning
Context-sensitivity and the semantics-pragmatics interface
Context-sensitive expressions highlight the interaction between semantics and pragmatics:
- Semantics provides the general rule for an expression. For example, the semantic rule for "I" is: this word refers to the speaker of the utterance.
- Pragmatics fills in the specific value. In a particular conversation, pragmatics tells you who the speaker is, and therefore who "I" refers to.
Both layers are needed. Semantics alone gives you an incomplete meaning (you know "I" refers to the speaker, but not which person that is). Pragmatics alone can't work without the semantic rule that tells you where to look.
How to divide the labor between semantics and pragmatics is a major debate in the field:
- Minimalist approaches assign a thin semantic meaning to expressions and give pragmatics a larger role in determining what's communicated.
- Richer semantic approaches argue that more of the interpretive work happens at the semantic level, leaving less for pragmatics to resolve.
Challenges of context-sensitivity for meaning theories
Context-sensitive expressions create real problems for several theoretical frameworks:
- Truth-conditional semantics traditionally evaluates sentences based on the conditions under which they're true or false. But a sentence like "I am here now" doesn't have fixed truth conditions until you know who said it, where, and when. The framework needs extra mechanisms (like Kaplan's distinction between character and content) to handle this.
- Dynamic semantics offers one solution by modeling meaning not as a static truth condition but as the potential to update the context. On this view, each utterance changes the conversational context, and context-sensitive expressions get their meaning from that evolving context.
- Relevance Theory (a pragmatic approach) emphasizes that hearers actively infer meaning using contextual cues and cognitive principles. The hearer doesn't just decode; they figure out what the speaker most likely intended based on what would be most relevant.
Building a comprehensive theory of meaning is difficult precisely because context-sensitive interpretation involves semantic rules, pragmatic inference, and cognitive processing all at once. No single framework captures every aspect cleanly, which is why this remains an active area of research.