ACT Reading: Evaluate How an Author Uses Evidence to Support Claims

Published on March 5, 2026
ACT Reading: Evaluate How an Author Uses Evidence to Support Claims

The Types of Evidence Authors Use

Authors support claims using: (1) Statistics and data (numbers, percentages), (2) expert testimony (quotes from authorities), (3) examples and anecdotes (specific stories or cases), (4) logical reasoning (if-then statements), (5) research findings (study results). Strong arguments use multiple evidence types. Weak arguments rely on one type or use selective evidence. When analyzing author support on ACT Reading, identify which evidence type appears and judge whether it's sufficient for the claim.

Example: Claim: "Climate change is accelerating." Evidence Type 1 (statistics): "Global temperatures rose 1.2°C in the past 50 years." Evidence Type 2 (research): "Studies show melting polar ice caps." Evidence Type 3 (examples): "Hurricane frequency has increased." The author uses multiple types, making the claim stronger.

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Weak Evidence Patterns to Spot

Pattern 1: Cherry-picked data (selecting only favorable examples while ignoring counterexamples). Pattern 2: Anecdotal evidence (one story used to prove a broad claim). Pattern 3: Appeal to emotion (using feelings instead of facts). Pattern 4: Circular reasoning (restating the claim as evidence). ACT Reading questions test whether you can distinguish strong evidence from weak. When you see weak evidence, the author's claim is less credible, and you should note this for follow-up questions.

Example of weak evidence: "All my friends believe this, so it must be true." (Anecdotal, emotional). Example of strong evidence: "A study of 5,000 people showed 73% support this position." (Statistical, broader).

Drill: Evaluate Evidence in Three Passages

Find three ACT Reading passages that make claims and provide evidence. For each passage, (1) identify the main claim, (2) list the types of evidence used, (3) judge overall strength (strong/weak/mixed), (4) note any cherry-picked or weak evidence. By the third passage, you'll automatically recognize evidence quality and strength.

After drilling, you'll answer ACT Reading questions about evidence faster and more accurately. This skill appears on most tests as questions asking "How does the author support this claim?" or "Which evidence strengthens the argument?"

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Why Evidence Analysis Matters for ACT Reading

ACT Reading tests your ability to think critically about arguments and evidence. Understanding evidence types and their strength shows deep reading comprehension. Mastering this skill helps you answer argument-analysis questions correctly and gain points that require higher-level thinking.

Spend 30 minutes drilling evidence evaluation on three passages. By test day, you'll confidently assess argument strength and answer evidence-based questions accurately.

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