AP® English Language and Composition · Big Idea 1

1.A Purpose, and Texts That Carry More Than One (RHS-1.C)

Purpose is what a writer wants to happen in the reader as a result of the text. Every choice in the piece exists to serve that goal, and some texts are built to serve more than one at once.

Purpose is not the subject of a text. A letter can be about a leaky roof without its purpose being 'the roof.' Purpose is the change the writer wants in you: a belief adopted, an action taken, a feeling stirred. Once you name that target, the text stops looking like a pile of facts and starts looking like a machine built to hit one point. Every detail earns its place by moving you toward that point, so working backward from the ending, the request, the call to action, usually reveals what the whole piece was aimed at from its first word.

Many texts carry more than one purpose at once, and the trick is ranking them, not just listing them. A truck ad that makes you laugh is not confused about its goals. The entertainment is subordinate: it buys attention so the selling purpose, which is dominant, can spend that attention on a price and a towing capacity in the final seconds. Ask which purpose the other one is serving, and the hierarchy usually snaps into focus. A text with no clear hierarchy, where the purposes compete instead of cooperate, tends to feel scattered or confused to its reader.

This sets up a harder case: what a text announces as its purpose and what it actually does can split apart. A report that calls itself transparent while quietly omitting inconvenient data has a stated purpose and a working purpose, and they are not the same thing. When a reader catches the gap, the announced purpose stops helping the writer and starts working against them, since the mismatch becomes the reader's best evidence that the real aim was something closer to management of impression than honesty. Reading for purpose this way connects directly to reading for audience and context, since purpose only makes sense once you know who the text is trying to move and why now.

Key terms

Purpose
The effect a writer wants the text to produce in the reader, such as a belief, feeling, or action.
Dominant purpose
The main goal a text is built to achieve, which any other purposes present are arranged to serve.
Subordinate purpose
A secondary goal in a text that exists to support and enable the dominant purpose rather than compete with it.
Announced purpose
The goal a text openly claims to have, which may or may not match what the text actually does.
Working purpose
The goal a text actually pursues through its real choices, sometimes hidden behind a different announced purpose.

Watch it explained

  1. How it worksHow does a purpose act like a target that every sentence in an argument is aimed at?
  2. Worked exampleFind the purpose of a letter that ends 'So please vote yes on Tuesday, for your children's sake.'
  3. Worked exampleWalk me through separating the two aims of an ad that entertains you and sells you a truck at once.
  4. Going furtherWhat happens to a text when its announced goal and its real goal point in different directions?
  5. Common mistakeWhy isn't a writer's purpose simply whatever the text happens to be about?

Check yourself

Your turneasy1 of 3
Adapted from a letter mailed to households in a school district. 'The roof of the elementary school has been patched 11 times since 2006. Last winter a classroom ceiling came down at four in the morning, eight hours before 30 children would have been sitting under it. Measure B raises the property levy by 82 dollars a year on a median home. I have read the objections and some of them are fair. So please vote yes on Tuesday, for your children's sake.' What is the primary purpose of this letter?

End of topic.