SAT Evaluating Whether Examples Are Sufficient Evidence: When One or Few Examples Fall Short

An example can serve two functions: to illustrate a concept (showing what something looks like) or to prove a claim (showing that something is true broadly). A single example rarely proves a broad claim, though it can illustrate one. For example, "Some people benefit from exercise" is proven by one example of a person who benefits. But "Exercise is beneficial for everyone" requires much more evidence than one example. The SAT tests whether you can distinguish between examples that function as proof and examples that are merely illustrative. Confusing the two leads to wrong answers about how well evidence supports claims.

This requires evaluating the breadth of the claim. A narrow claim (about one type of person or situation) might be proven by a few examples. A broad claim (about people in general, across contexts, universally) requires extensive evidence. Recognizing this prevents overestimating how well examples support claims.

Question 1: What claim does this example support? Question 2: How broadly does that claim apply (to a specific situation, to a type of person, to everyone)? Question 3: How many examples are provided? Question 4: Is the number of examples sufficient for the breadth of the claim? If one or a few examples support a universal claim, the evidence is insufficient. If one example illustrates a claim about that specific example, it is sufficient. The gap between narrow examples and broad claims is where insufficient evidence appears.

Application: An author claims "Social media harms mental health" and provides one example of a teenager whose anxiety worsened after joining social media. This one example illustrates that social media can harm mental health in this case, but does not prove the claim applies broadly. An answer asserting the example "proves" the claim is too strong; a better answer says it "illustrates" or "suggests" the possibility.

Example 1 (Sufficient): Claim: "Traditional education has some limitations." Examples: overcrowding in schools, outdated materials, limited access to technology. Three specific limitations support the claim of "some limitations" accurately. Example 2 (Insufficient): Claim: "Technology always improves learning outcomes." Example: One school implemented tablets and saw test scores rise 10%. One example of improvement does not prove the universal claim that technology always improves outcomes. The difference is between narrow claims (supported by few examples) and broad claims (requiring extensive evidence).

SAT questions test this by asking whether evidence "supports," "suggests," "proves," or "adequately demonstrates" a claim. Understanding example sufficiency determines which word choice is correct.

For five consecutive passages, identify each example and evaluate: What claim does it support? How broad is that claim? Are the examples sufficient? This forces you to assess example quality rather than just noting their presence. By day five, you will habitually evaluate whether examples adequately support their corresponding claims.

On test day, when you assess evidence quality, your example-evaluation skill guides you. Questions about whether evidence "proves" or merely "suggests" will be answered correctly because you assess example sufficiency. This catches 1-2 evidence-evaluation errors per practice test. The five-passage drill prevents overestimating how well examples support broad claims.