Central ideas & details

Learn it: the scope test

After reading, answer in your own words: "What's the one thing this passage wants me to walk away knowing?" Then run each choice through three checks:

• Too narrow? Does it cover only one sentence's worth of the passage? A passage about how cuttlefish camouflage works isn't "about" the fact that one species lives near Japan.
• Too broad? Does it claim more territory than the text visited? A study of one lake isn't "about" the health of the world's fresh water.
• Too strong? SAT passages hedge: may indicate, one factor, suggests. Choices that upgrade hedges to certainties are wrong even when the topic matches.

The right answer often feels a little boring. That's not an accident — accurate summaries usually are.

Detail questions

"According to the text…" questions are retrieval, not interpretation. Find the sentence, match it against the choices, and demand a paraphrase — same meaning, different words. If you can't point to the sentence that supports your choice, you're guessing.

Common traps

• The memorable detail. The most vivid fact in the passage gets its own wrong answer, betting you'll remember it fondly.
• The real-world truth. A choice that's true in life but absent from the passage. The test is "does the text say it," never "is it true."
• Half-right compounds. A choice whose first half matches the text and second half quietly doesn't. Read every word of every choice.

Try it

Free resources for this checkpoint

Practice next

Question Bank filter: Reading & Writing → Information and Ideas → Central Ideas and Details. After each question, name which scope failure each wrong answer commits — it makes the pattern permanent.