All SAT GuidesPractice Central Ideas and Details questions
Study Guide
Central Ideas and Details
These questions ask you to identify the main point of a passage or paragraph, or to find specific details that support a claim. You must distinguish between what is stated, implied, and irrelevant.
Key Rules
- The central idea is the author's main argument or purpose — not just a topic.
- Supporting details are specific facts, examples, or evidence that back up the central idea.
- The central idea is usually found in the first or last paragraph, or stated in a thesis sentence.
- Wrong answer choices often describe a specific detail as if it were the main idea.
Common Mistakes to Avoid
- Choosing an answer that is too narrow (a detail) when the question asks for the main idea.
- Choosing an answer that is too broad (goes beyond what the text says).
- Confusing what the author mentions with what the author emphasizes.
- Selecting an answer based on your own knowledge rather than the passage.
SAT Strategy Tips
- →Read the first and last sentences of each paragraph to map the structure.
- →Ask: "What is this whole passage really trying to say?"
- →Eliminate choices that are only mentioned in one sentence of a long passage.
- →The correct central idea answer should apply to the entire passage, not just part of it.
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