Efficient Reading with Evidence

Turn a short passage into a small set of claims you can test.

By the end, you should be able to:

3.1 Central ideas, details, and inferences

Start with the question to identify the job: summarize the passage, retrieve a stated detail, or infer something the passage supports. Then read the full short passage with that job in mind. Task-first reading is a useful default, not permission to read only the final sentence. A final claim may qualify an earlier claim; a detail may refer to a group introduced several sentences earlier. Your first interpretation is provisional until the whole passage makes sense.

Compress meaning, not just length. After reading, form a brief account such as 'Old explanation predicts X; new finding shows Y; author limits the conclusion to Z.' For a central-idea question, the answer must represent the passage's main point at the right level of breadth. An accurate description of an experiment's equipment can still be a poor summary of a passage about what that experiment reveals. Conversely, 'Scientists study plants' is too broad to preserve a specific finding about shade tolerance.

For a detail question, identify the requested person, object, time, or comparison and locate the statement about it. Return to that sentence and enough surrounding context to resolve references. For an inference, separate the stated premise from the conclusion you can safely add. If a passage says a technique works only on dry samples, it supports a limitation on that technique; it does not establish that every wet sample is impossible to analyze by any technique. Watch the answer's subject and scope as carefully as its main verb.

When two choices remain, name their decisive difference: all versus some, observation versus cause, one method versus every method, or the whole argument versus one example. Check that difference against the text. An extreme word is not automatically wrong; it is wrong when the passage does not justify it. Move on when one choice is supported and each rival has a demonstrable defect. Further rereading without a disputed claim to investigate usually adds little.

Task

Efficient evidence check

Common wrong turn

Central idea

Does this preserve the passage's main claim and important qualification?

Choose a true but secondary detail.

Detail

What exact statement answers the requested who, what, when, or how?

Substitute a nearby fact about a different group.

Inference

Do the stated facts support this conclusion without an extra assumption?

Invent a cause or expand the claim's scope.

W3.1: Separate a limit on evidence from a claim about history

A city archive contains hundreds of petitions submitted to its council in 1842. Nearly all surviving petitions were approved. However, clerks were instructed to preserve approved petitions in bound volumes and to return rejected petitions to their authors. Historian Mara Bell therefore argues that the archive cannot establish how readily the council granted residents' requests. The archive's contents reflect not only council decisions but also ______

Which choice most logically completes the text?

A. a tendency for residents to submit requests that the council was likely to approve.

B. a preservation procedure that favored retaining records of approved requests.

C. a decline in the number of rejected requests during 1842.

D. a policy requiring the council to approve most requests submitted by residents.

Practice this lesson: 3.05, 3.06, 3.07.

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Answer: B

Completed text: A city archive contains hundreds of petitions submitted to its council in 1842. Nearly all surviving petitions were approved. However, clerks were instructed to preserve approved petitions in bound volumes and to return rejected petitions to their authors. Historian Mara Bell therefore argues that the archive cannot establish how readily the council granted residents' requests. The archive's contents reflect not only council decisions but also a preservation procedure that favored retaining records of approved requests.

  1. Identify the task: finish the historian's explanation of why the surviving records cannot establish the approval rate.
  2. Compress the evidence: approved petitions stayed; rejected petitions went back to their authors. Survival therefore depended on the council's decision.
  3. Predict a restrained completion: the archive overrepresents approved requests because of how documents were retained.
  4. Choose B. It states the documented preservation procedure without inventing the original distribution of approvals and rejections.

Why A fails: The passage gives no evidence about how residents selected requests to submit. This could be imagined, but the preservation procedure already explains the skew in surviving records.

Why C fails: The passage supplies no comparison across dates. A decline in rejections cannot be inferred from a collection that systematically excluded rejected petitions.

Why D fails: The stated policy governed record retention, not which requests the council had to approve. This changes the subject of the policy.

Key takeaway: A biased surviving record can limit an inference about the past without proving what the missing records contained.

Strategy in use: The decisive difference is preservation versus decision-making. Once you identify that difference, check it instead of rereading every historical detail.

Practice this lesson: 3.05, 3.06, 3.07.

3.2 Textual and quantitative evidence

Evidence questions ask for a relationship between a claim and a finding. Before evaluating choices, state the claim in plain language, including its comparison and qualification. 'The lining lowers noise at high speeds' is different from 'The lining lowers noise at every speed.' Also note the direction of the question: support, weaken, illustrate, or complete. A finding can concern the right topic while doing the opposite of what the question requests.

For textual evidence, ask what you would expect to observe if the claim were true. Suppose researchers propose that brief darkness, rather than a temperature change, triggers an animal's movement. A useful comparison changes light while holding temperature stable. A finding about warmer animals in darker habitats may leave the two explanations entangled. You need not design an entire perfect experiment; identify the evidence that bears most directly on the stated claim among the choices. Do not require a single result to prove every possible implication.

For a table, read the title, row labels, column labels, and units before choosing numbers. Then translate the claim into an exact comparison: which two cells, which difference, or which sequence? If the claim concerns improvement, compare before and after for each group; the highest final value alone may be misleading. If groups differ in size, raw counts may not answer a question about rates. Keep the denominator attached to the number. Eight successes out of ten attempts is not the same result as eight successes out of twenty.

Match the strength of the answer to the design described. A table may show an association without establishing its cause; a finding from one tested condition may support a conclusion about that condition without supporting every setting. Resolve the final two options by doing the smallest necessary check, such as calculating two changes or locating the clause that isolates a variable. State the result with its units. Extra arithmetic and outside scientific knowledge usually distract from the evidence comparison the question actually asks you to make.

W3.2: Compare the change, not just the final value

A print studio tested three coating formulas on separate batches of identical paper. Technicians measured the mean force needed to tear samples from each batch before and after the coating was applied. The studio defined a formula's benefit as the increase in mean tear force, rather than the final mean tear force alone. According to this definition, Formula B provided the greatest benefit because ______

Mean tear force before and after coating

Formula

Before coating (newtons)

After coating (newtons)

A

12

17

B

8

15

C

10

16

Which choice most effectively uses data from the table to complete the text?

A. its coated samples required a mean force of 15 newtons to tear, less than the coated samples for either other formula.

B. its samples had the lowest mean tear force before coating, leaving the greatest possible room for improvement.

C. its mean tear force after coating was 7 newtons greater than that of Formula A's samples before coating.

D. its samples' mean tear force increased by 7 newtons, compared with increases of 5 and 6 newtons for Formulas A and C, respectively.

Practice this lesson: 3.08, 3.09, 3.10.

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Answer: D

Completed text: A print studio tested three coating formulas on separate batches of identical paper. Technicians measured the mean force needed to tear samples from each batch before and after the coating was applied. The studio defined a formula's benefit as the increase in mean tear force, rather than the final mean tear force alone. According to this definition, Formula B provided the greatest benefit because its samples' mean tear force increased by 7 newtons, compared with increases of 5 and 6 newtons for Formulas A and C, respectively.

  1. Read the definition before the numbers: benefit means increase in mean tear force.
  2. Read the units and calculate within each row: A is 17 - 12 = 5 newtons; B is 15 - 8 = 7 newtons; C is 16 - 10 = 6 newtons.
  3. Compare the three changes. Seven newtons is the largest increase, even though B's final value is the lowest.
  4. Choose D because it states both B's increase and the relevant comparison with the other formulas.

Why A fails: The numbers are accurate, but the choice compares final values. The studio explicitly defines benefit as the increase, so this fact does not justify its conclusion.

Why B fails: B did start lowest, but the table establishes no maximum possible tear force or guarantee that a lower starting value produces a larger improvement. Calculate the actual changes.

Why C fails: This mixes different rows and different measurement stages. It is also numerically false: 15 - 12 is 3, not 7.

Key takeaway: Convert the claim into an operation before calculating. Here the necessary operation is after minus before within each row.

Strategy in use: Three short subtractions settle the question. Comparing every possible pair of cells would consume time without testing the stated definition.

Practice this lesson: 3.08, 3.09, 3.10.

3.3 Vocabulary, purpose, and structure

Words-in-context questions reward local meaning, not the most familiar dictionary meaning. Read the entire sentence and enough surrounding text to identify the relationship around the tested word. Predict a plain substitute, then test the actual choices in context. A scholar who 'qualifies a claim' limits it; the scholar does not necessarily earn a credential. Your substitute is a guide, not a commitment: a choice may capture the meaning more accurately than your first prediction.

For a blank, identify what the sentence requires before choosing among polished words. Is the author describing a result as expected or surprising, a pattern as stable or variable, an explanation as convincing or incomplete? Pay attention to contrast markers and negation. In 'Although the samples differed in color, their composition was ___,' the contrast makes similarity in composition plausible. But the rest of the passage must still support the particular degree of similarity the answer states.

For purpose questions, separate what a sentence says from what it does. 'A visitor counts five windows' describes content. 'It introduces an observation that a later discovery corrects' describes a role. Summarize the sentence immediately before and after the target; those neighboring roles often reveal its function. Distinguish the author's voice from a view the author reports. An objection quoted in a passage may be included so the author can answer it, not because the author accepts it.

For overall structure, map the sequence of ideas using ordinary verbs: introduces a problem, describes an approach, reports a result, limits an interpretation. A valid structure answer must fit the sequence and the relationships, not merely mention the same subjects. Watch for choices that turn a hypothesis into an established result or present a single study as a debate between researchers. If a passage contains technical vocabulary, first identify these familiar logical roles. Look up nothing and import no outside facts; use the passage's own explanations to test the choices.

W3.3: Use the action around an unfamiliar meaning

In reviewing a proposed history of the town's theaters, editor Anika Shah did not reject the author's central argument. Instead, she qualified it, noting that its account of declining attendance applied to the large commercial theaters but not to the small neighborhood stages, whose audiences had continued to grow.

As used in the text, what does the word "qualified" most nearly mean?

A. Limited

B. Authorized

C. Strengthened

D. Repeated

Practice this lesson: 3.11, 3.12, 3.13.

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Answer: A

Correct choice: Limited

  1. Identify the target: the editor's action toward the argument, not her professional credentials.
  2. Use the explanation after the word. Shah says the account applies to large theaters but not neighborhood stages.
  3. Predict 'restricted its scope.' Choose A, Limited, because the editor narrows where the argument applies.
  4. Check the first sentence: she did not reject the central argument. Limiting it fits that distinction.

Why B fails: Authorized can mean gave permission for something, but the passage discusses the scope of an argument, not permission to publish it.

Why C fails: The editor identifies an exception to the argument's coverage. The passage does not say she adds evidence that makes the original broad claim stronger.

Why D fails: The editor adds a restriction rather than simply restating the argument. This choice misses the contrast between the two kinds of theaters.

Key takeaway: The surrounding action determines the meaning. Here 'applied to X but not Y' supplies a direct definition through context.

Strategy in use: A short paraphrase of the explanatory clause is enough. Do not spend time listing every meaning you know for the word.

Practice this lesson: 3.11, 3.12, 3.13.

3.4 Paired texts and difficult language

Read the question first, then keep the two texts separate long enough to identify each author's claim. Reduce each to a short statement with its qualification: 'Text 1: rankings probably change because of reader preference. Text 2: rankings may change because the catalog changed.' Both concern rankings, but the second offers a competing explanation. A shared topic does not establish agreement, and different emphases do not automatically establish disagreement.

For a likely-response question, focus on the exact statement one author is asked to evaluate. Ask whether the other author would accept it, narrow it, question its evidence, or offer an alternative cause. Use only the second author's stated commitments. An author who questions the strength of a conclusion need not believe its opposite. If Text 2 says the available evidence cannot distinguish two explanations, do not choose an answer claiming that Text 2 has disproved one of them.

For difficult language, extract the sentence's basic claim before interpreting every descriptive phrase. Find who or what is being discussed, what is asserted, and which clause restricts that assertion. In 'Although the revised catalog, compiled from records of uneven completeness, appears exhaustive, its silence about an item does not establish the item's absence,' the core is 'the catalog's silence does not establish absence.' The interruption explains why. Preserve not, only, unless, some, and other small words that can reverse or limit the claim.

After simplifying, return to the original text to verify your paraphrase. Compression is useful only when it preserves the author's degree of certainty and the relationship between ideas. If you are stuck, choose a narrow question to investigate: 'Which explanation does Text 2 actually challenge?' or 'What does this not rule out?' A targeted reread can resolve that question. Repeatedly restarting both texts without a target often wastes time. If a productive check is still unclear and other questions remain, use the guide's deferral routine rather than forcing certainty.

W3.4: Question an explanation without claiming its opposite

TEXT 1

The increasingly frequent appearance of short poems in the journal Harbor Review during the 1920s probably reflects a change in its readers' tastes. Editors seeking to retain their audience would have selected more short poems as readers came to prefer them over longer works. The journal's publication record thus offers evidence of shifting literary preferences.

TEXT 2

Harbor Review began paying contributors a fixed fee per poem in 1921, replacing its previous payment per printed line. Under the new policy, contributors could earn more for the same total number of lines by submitting several short poems. Any account of the journal's changing contents should consider how this policy may have affected the work available to its editors.

Based on the texts, how would the author of Text 2 most likely respond to the explanation offered in Text 1?

A. By arguing that readers continued to prefer longer poems throughout the 1920s

B. By agreeing that the payment policy was introduced in response to readers' preferences

C. By suggesting that a change in contributors' incentives could help explain the publication pattern

D. By asserting that the publication pattern resulted entirely from editors' efforts to reduce total payments

Practice this lesson: 3.14, 3.15, 3.16.

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Answer: C

Correct choice: By suggesting that a change in contributors' incentives could help explain the publication pattern

  1. Compress Text 1: more short poems probably means readers increasingly preferred short poems.
  2. Compress Text 2: payment per poem could encourage writers to submit more short poems.
  3. Identify the relationship: Text 2 offers a possible influence on the supply of poems, complicating Text 1's explanation based on reader demand.
  4. Choose C. Its 'could help explain' preserves Text 2's caution and does not claim the payment policy was the only cause.

Why A fails: Text 2 says nothing about what readers preferred. Offering an alternative influence does not establish that reader preferences moved in the opposite direction.

Why B fails: Text 2 describes the policy and a possible effect on submissions; it does not identify reader preference as the reason the policy began.

Why D fails: The choice invents an editorial motive and claims a complete explanation. Text 2 discusses contributors' incentives and uses the cautious phrase 'may have affected.'

Key takeaway: A competing explanation can weaken confidence in one interpretation without disproving it or establishing a sole cause.

Strategy in use: The final check is about cause and certainty: reader demand versus contributor incentives, and probably versus could. Publication dates and the journal's name do not decide the answer.

Practice this lesson: 3.14, 3.15, 3.16.

Independent practice

Keep these checks in mind

• Identify the task, read the full short passage, and compress its claims without losing their scope or certainty.

• For close answers, name a disputed word or relationship and check that precise difference against the evidence.

• For data, translate the claim into the needed comparison and keep units and denominators attached to the values.

• For paired texts, distinguish a shared topic from agreement and insufficient evidence from proof of the opposite.

• Use targeted rereading when you can name what it will resolve; use a provisional answer and a useful flag when further work is stalled.

Begin with four short drills, one per lesson, then complete twelve multiple-choice questions, three per lesson. Labels distinguish SAT-format questions from strategy decisions. Give the evidence or stated condition that decides each item. Model drill responses are examples; another well-supported response may also work.

These four written drills are ungraded. Write your reasoning before opening each model answer.

Drill 3.01

A research team found that one sealant reduced water absorption in newly made clay tiles during a two-week laboratory trial. The team did not test older tiles or exposure to freezing temperatures.

In one sentence, state the supported finding. Then identify two scope changes that would make a proposed conclusion unsupported. This is a strategy drill, not an SAT-format question.

Write a brief answer and identify the words that justify it.

Show model answerHide model answer for drill 3.01

Preserve the claim's scope | Review lesson 3.1

Answer: In a two-week laboratory trial, the tested sealant reduced water absorption in newly made clay tiles. Unsupported expansions would include claiming that the sealant works on older tiles or under freezing conditions.

The model preserves the material, age, tested condition, outcome, and duration. The untested cases are limits on the available evidence; the passage does not establish that the sealant fails in those cases.

If you missed it: In your next inference question, underline the population and tested condition before comparing the answer choices.

Strategy in use: Compress the finding, but keep the restrictions that could distinguish the final two answers.

Review lesson: 3.1 Central ideas, details, and inferences

Drill 3.02

In a laboratory inspection, 18 of 30 samples from Batch R passed a durability check. For Batch S, 24 of 60 samples passed the same check. A student concludes that Batch S had the higher pass rate because 24 is greater than 18.

Correct the student's conclusion and show the smallest calculation needed. This is a strategy drill, not an SAT-format question.

Write a brief answer and identify the words that justify it.

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Attach the denominator | Review lesson 3.2

Answer: Batch R had the higher pass rate: 18/30 = 60%, whereas Batch S's rate was 24/60 = 40%.

The claim concerns rates, so the number passing must be divided by the total inspected in each batch. Batch S has more passing samples but a lower proportion passing.

If you missed it: When a claim uses rate, proportion, or percentage, write the denominator beside each relevant count before comparing.

Strategy in use: Two fractions settle the disputed claim; no other comparison is needed.

Review lesson: 3.2 Textual and quantitative evidence

Drill 3.03

Some residents worried that converting the vacant lot into a garden would remove legal parking spaces available on the lot. A survey showed that the lot contained no legal parking spaces and had not been legally used for parking for six years. The planning committee therefore concluded that the conversion would not remove any existing legal parking spaces.

Describe what the bold sentence does in the argument, rather than merely repeating its content. This is a strategy drill, not an SAT-format question.

Write a brief answer and identify the words that justify it.

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Distinguish content from function | Review lesson 3.3

Answer: It supplies evidence used to answer a concern that the proposal would remove existing legal parking spaces on the lot.

The preceding sentence presents a concern about existing legal spaces on the lot, and the following sentence uses the survey to answer that concern. The survey does not establish that the project cannot affect any aspect of neighborhood traffic or parking.

If you missed it: For the next purpose question, label the ideas before and after the target sentence before evaluating the choices.

Strategy in use: A useful function statement contains a role word such as supports, qualifies, illustrates, or challenges and identifies the claim affected.

Review lesson: 3.3 Vocabulary, purpose, and structure

Drill 3.04

The absence of tool marks on the surviving fragments, although compatible with the proposal that the vessels were molded, cannot by itself exclude hand shaping, since polishing may have removed marks left by that process.

Write a plain-language paraphrase that preserves what the evidence supports and what it does not rule out. Then name one overstatement to avoid. This is a strategy drill, not an SAT-format question.

Write a brief answer and identify the words that justify it.

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Simplify without reversing a claim | Review lesson 3.4

Answer: The missing marks fit the molding explanation, but the vessels could still have been shaped by hand because polishing might have erased the marks. Avoid claiming that the vessels were definitely molded or definitely polished.

Compatible with means consistent with, not proof of. Cannot exclude keeps hand shaping possible. May have removed introduces a possible explanation, not an established event.

If you missed it: Circle words expressing possibility and negation, then check that your paraphrase preserves each one.

Strategy in use: Extract the core claim first, then restore the reason and uncertainty. Do not drop a difficult clause if it changes what the evidence permits.

Review lesson: 3.4 Paired texts and difficult language

Practice: 12 multiple-choice questions