Speech Act Theory (Illocution, Perlocution)

Prime #

315

Origin domain

Linguistics & Semiotics

Also from

Philosophy

Aliases

Performative Utterance, Illocutionary Force, Pragmatics of Action

Related primes

Cooperative Principle and Gricean Maxims, Pragmatic Politeness Strategies, Signifier–Signified Duality

Core Idea

Speech Act Theory posits that utterances don't just convey information (locution) but also do something (illocution) and cause an effect on listeners (perlocution). For instance, saying "I apologize" is itself the act of apologizing, not just a statement. The meaning extends beyond words to intended action and consequential impact.

How would you explain it like I'm…

Words-That-Do-Things

When you say 'I'm sorry,' you're not just making sounds — you're *doing* something: apologizing. And whether the other kid actually forgives you is a second, different thing. Saying it, doing it by saying it, and what happens after — three things, all wrapped up in one little sentence.

Saying-Is-Doing

When somebody talks, three things happen at once. First, they say words that mean something. Second, they're doing something by saying those words — like promising, warning, or apologizing. Third, the words actually have an effect on the listener — the listener believes them, gets scared, or agrees. The cool part is these three can come apart: you can say 'I promise' but if you don't really mean it, the promise didn't actually happen, and even a real promise might not be believed.

Three Layers of Speech

Speech Act Theory says that when you utter a sentence, you perform three acts at once. The *locutionary act* is producing meaningful words in a grammatical structure ('I hereby resign'). The *illocutionary act* is what you *do in saying* those words — resign, promise, apologize, warn, declare. The *perlocutionary act* is the *effect* the utterance has on the hearer — they accept your resignation, believe your promise, forgive you, comply. The three layers can come apart: you might say the right words but lack the authority to resign (illocution fails), or your promise might not be believed (perlocution fails). The framework comes from J. L. Austin's *How to Do Things with Words* (1962) and was systematized by John Searle, who sorted illocutions into five families: asserting, directing, promising, expressing feeling, and declaring (firings, marriages, sentences).

 

Speech Act Theory holds that when someone utters a sentence, three distinct acts are performed simultaneously. (1) The *locutionary act* is the production of meaningful words in a grammatical structure ('I hereby resign'). (2) The *illocutionary act* is the act the speaker *performs in saying* those words, carrying a conventional force — resigning, promising, apologizing, declaring, warning. (3) The *perlocutionary act* is the *effect* the utterance produces on the hearer — accepting the resignation, believing the promise, forgiving, complying. The three layers can come apart: a locution can fail to carry the intended illocution (wrong context, no authority), and an illocution can succeed yet fail to achieve its perlocutionary effect (the hearer refuses, doesn't understand, doesn't believe). The framework originates in J. L. Austin's *How to Do Things with Words* (1962), where he distinguished utterances that describe states of affairs (*constatives*) from utterances that themselves perform actions (*performatives*) — a distinction that eroded into the deeper insight that *all utterances have illocutionary force*. John Searle's *Speech Acts* (1969) systematized this, classifying illocutions into five functional families: representatives (asserting), directives (ordering), commissives (promising), expressives (apologizing), and declarations (firing, marrying, sentencing). *Felicity conditions* — the background facts that must hold for the act to succeed (the officiant has legal authority; the promise expresses a feasible future intention) — govern whether the illocution succeeds or *misfires*.

Broad Use

• Legal/Official Declarations: "I now pronounce you husband and wife" changes legal status.

• Software Commands: Typing "delete file" in a terminal or clicking a "delete" button performs an action, not just states it.

• Organizational Directives: A boss saying "You're fired" is an act that changes an employee's status.

• Online Social Interactions: Tweets like "I challenge you to..." can spark real contests or responses.

Clarity

Distinguishes between literal content ("it's raining") and the performed function (e.g., requesting someone bring an umbrella, or disclaiming an event).

Manages Complexity

Helps identify how language alone can transform social or operational states, preventing confusion about whether words are mere statements or actions.

Abstract Reasoning

Encourages analyzing intent and effect behind utterances or signals, not just the dictionary meaning of words.

Knowledge Transfer

From linguistic pragmatics to UI design (buttons labeled with action verbs perform tasks), legal frameworks (contracts rely on illocutionary force: "I hereby agree..."), or organizational leadership (an announcement can create policy changes).

Example

"I promise to pay you tomorrow." The act of promising is done by the utterance itself—assuming sincerity, it commits the speaker to future action.

Relationships to Other Primes

Parents (1) — more general patterns this builds on

• Speech Act Theory (Illocution, Perlocution) is a decomposition of Performativity — Speech act theory is the specific shape performativity takes when an utterance's illocutionary force constitutes the social fact it names.

Children (1) — more specific cases that build on this

• Pragmatic Politeness Strategies presupposes Speech Act Theory (Illocution, Perlocution) — Pragmatic politeness strategies presuppose speech act theory because face management operates on the illocutionary force of utterances threatening or supporting hearer-face.

Path to root: Speech Act Theory (Illocution, Perlocution) → Performativity

Not to Be Confused With

• Speech Act Theory (Illocution, Perlocution) is not Code-Switching because Speech Act Theory describes the kinds of action performed by uttering (promising, declaring), whereas Code-Switching is the practice of alternating between distinct linguistic codes for pragmatic, identity, or stylistic purposes.
• Speech Act Theory (Illocution, Perlocution) is not Signifier–Signified Duality because Speech Act Theory focuses on what actions utterances perform and their effects on hearers, whereas Signifier–Signified Duality concerns the structural relationship between material form and conceptual content in signs.
• Speech Act Theory (Illocution, Perlocution) is not Compositionality because Speech Act Theory explains what acts utterances perform and how context and convention determine their effects, while Compositionality explains how the meaning of complex expressions is determined by constituent meanings and combination rules.