# Central Ideas and Details on the SAT: Examples & Practice Source: https://1600.now/sat-skill/central-ideas-and-details --- Reading & Writing · Information and Ideas ## Central Ideas and Details A central idea summarizes the passage's main point across its sentences. A detail answer must match the particular fact requested, including who did what, when, and under what conditions. Written by [Luke Finigan](https://1600.now/about) 2 min read Updated Oct 2, 2026 ### Summarize the change in the passage Consider: "A museum long attributed a painting to Mara. Examination of its pigments found a material introduced after Mara's death. The museum now attributes the work to a later follower." The central idea is that new material evidence changed the painting's attribution. An answer about the painting's colors is too narrow. An answer saying every museum attribution is unreliable is too broad. Cover the main finding and its consequence without extending beyond this case. ### Use the ending to check the opening An opening can supply background that the rest of the passage revises. In the museum example, the old attribution is background; the later evidence and changed attribution are the point. Words such as "however," "instead," and "therefore" reveal turns in the argument. Read the main idea as the whole passage's claim rather than selecting the first sentence by default. ### Retrieve the specific fact for a detail question If asked why the attribution changed, the answer is the pigment's date. The later follower is the new attribution, which answers who now receives credit, not why the decision changed. Locate the relevant sentence and compare its subject, action, and qualifiers with the choice. A choice that swaps the cause and result can use familiar words while reporting the wrong fact. ### Eliminate unsupported additions A detail choice claiming the museum deliberately deceived visitors introduces motive not supplied by the text. A central-idea choice claiming new technology always solves art mysteries introduces a universal conclusion. For review, mark whether a distractor was narrow, broad, reversed, or invented. Then write a short main idea with only the passage's central relationship and necessary qualifiers. ### Check your understanding Try it yourself A text explains that a plant thought extinct was found in two valleys, but remains rare. Which main idea fits? A The plant is now widespread. B The plant survives in a limited area despite an earlier belief that it was extinct. C Every extinct plant can be found again. D The valleys have no other plants. ### Sample central ideas and details questions Central Ideas and Details · Easy Which choice best states the main idea of the text? Gopher tortoises dig burrows in the ground. Inside, the burrows stay at a fairly constant temperature throughout the year. More than 350 other species, including rabbits, opossums, and frogs, also use these burrows as places to stay safe from heat, cold, and predators. A Gopher tortoise burrows provide shelter for many other animals. B Gopher tortoises dig deeper burrows than any other animal does. C Rabbits and frogs are unable to dig burrows of their own. D Gopher tortoises leave their burrows when the weather turns cold. - [Open the question and explanation](https://1600.now/bank/reading/328d4afe) Central Ideas and Details · Easy Which choice best states the main topic of the text? At the Larkspur Conservatory, horticulturists found that several native orchids opened their flowers more reliably when the greenhouse lights dimmed gradually rather than switching off at once. The finding has prompted the staff to reconsider how evening lighting is managed for plants whose flowering responds to subtle changes in light. A How gradual changes in greenhouse lighting can influence orchid flowering B Why the Larkspur Conservatory grows native orchids C The chemical composition of orchid flowers D How horticulturists design greenhouse windows - [Open the question and explanation](https://1600.now/bank/reading/3eed0c7f) Central Ideas and Details · Easy According to the text, what material are the sample trays made of? During a study of coastal erosion, geologist Laila Okafor places identical sample trays along a beach before each high tide. The trays are made of a porous ceramic that retains tiny grains carried by retreating water. After collecting the trays, Okafor weighs the sediment and compares the samples from different parts of the shore. A Rubber B Aluminum C Glass D Ceramic - [Open the question and explanation](https://1600.now/bank/reading/9d5b9a83) ### Practice this skill 1. Write one sentence covering the passage's main change or claim. 2. For details, locate the supporting sentence before choosing. 3. Remove any motive, cause, or generalization that the text does not supply. [Practice central ideas and details](https://1600.now/bank/reading/skill/Central%20Ideas%20and%20Details) [Print the central ideas and details worksheet and worked answers](https://1600.now/sat-central-ideas-and-details-worksheet). Then use a [mixed practice module](https://1600.now/modules) to check whether you can choose this method among other question types. ### Source and question labels The bank label for this guide is "Central Ideas and Details" in Information and Ideas. The worked examples above are written for this guide. - [College Board: Reading and Writing content domains](https://satsuite.collegeboard.org/sat/whats-on-the-test/reading-writing) ### Related skills - **[Inferences](https://1600.now/sat-skill/inference)** Combine the text's facts into the smallest conclusion they support. - **[Command of Evidence](https://1600.now/sat-skill/command-of-evidence)** Identify the claim before selecting evidence. - **[Text Structure and Purpose](https://1600.now/sat-skill/text-structure-and-purpose)** Explain what the text or an underlined sentence does in the argument.