JentooACT®

ACT® · Reading — Integration of Knowledge and Ideas: Arguments

Inferring a Central Claim

A central claim question asks you to state what every sentence in a passage is building toward, even when the writer never writes that sentence. You find it by asking what single point all the evidence supports.

A writer can argue hard for something without ever stating it because the claim lives in the arrangement of the evidence, not in one labeled sentence. Each fact, number, or quote is chosen to push toward the same conclusion. Your job is to notice the gap the evidence keeps measuring, or the pattern it keeps repeating, and name the point that gap or pattern is evidence for. If a passage keeps comparing a bus schedule to shift end times, the unstated claim is about the schedule needing to change, because that is the only claim all those comparisons serve.

The mechanism is convergence: reasons that look separate are really aimed at one target. On a passage about school start times, you might get a sentence on teenage sleep research, a sentence on attendance data, and a sentence on parent commute schedules. None of these says 'start school later,' but each removes an objection or supplies a reason for that one move, so that is the claim you supply. The same logic works in reverse when a writer argues by dismantling an opposing case: instead of building up a position, the passage takes apart each plank of the other side's argument one by one. When you see several supporting reasons for some policy each shown to be weak or overstated, and nothing put in their place, the unstated claim is that the policy itself does not hold up, not that some alternative does.

This connects directly to sufficiency. An inferred claim must stay exactly as strong as the evidence, no stronger. A study of one school's third grade supports trying an idea more widely, not a claim about an entire district, and a critique of a city ban's reasoning supports rejecting that ban, not a sweeping claim about all such bans everywhere.

Key terms

central claim
The single main point all the evidence and reasoning in a passage are built to support.
convergence
The way separate reasons or facts all point toward the same unstated conclusion.
sufficiency
Whether the evidence given is strong and broad enough to justify the claim drawn from it.
arguing by demolition
Supporting a position by dismantling each argument for the opposing view rather than building a case directly.
counterclaim
An opposing position a passage acknowledges or takes apart on the way to its own point.

Watch it explained

  1. How it worksHow do all the reasons in a text converge on a claim you have to supply yourself?
  2. Worked exampleShow me reconstructing an unstated claim from four paragraphs about school start times.
  3. Going furtherWhat changes when a writer argues by dismantling the opposing case instead of stating their own?
  4. Common mistakeWhy isn't an inferred claim allowed to be stronger than the evidence offered for it?

Check yourself

Your turnmedium1 of 3
Adapted from a transit newsletter. 'The last bus on the 40 route leaves the hospital at 10:40 p.m. About 54 percent of the hospital's cleaning and kitchen staff work shifts that end after eleven. A taxi across town costs 33 dollars, close to a fifth of a night's pay. The agency's own survey found 27 percent of those workers had missed at least one shift for want of a ride home.' The passage never states its claim. Which claim do its sentences converge on?

End of topic.