SAT Inferences

Inference questions ask what most logically completes a text. The credited answer is the conclusion the passage supports and no more — an inference that is stronger than the evidence is the standard wrong answer, even when it sounds sensible.

Practise this skill freeHow the SAT is structured
Reading and WritingInformation and Ideas156 questions
The trap on this skill

Turning a cautious supported inference into an absolute conclusion.

How this skill behaves

What 156 questions on it look like

100% of these questions can appear in the harder second module. On a section-adaptive test that matters: this is a skill that keeps mattering after a strong first module, not one you leave behind.

50% of the bank for this skill is rated hard, so it rewards practice past the point where the basic form feels comfortable.

hard50%
medium50%

Difficulty mix across the 156 questions in this skill.

From the bank

Three real inferences questions

Each one explains the credited answer and why every other option fails.

Information and Ideas · hard

Which inference is best supported by the passage?

  1. AThe changed part of the study had no likely effect on the outcome for map-reading tasks from the outdoor set.
  2. BThe change involving landmark labels only when every record was complete for the first-room cases likely affected the outcome for map-reading tasks from the outdoor set.correct
  3. CThe study proved that no factor other than landmark labels only when every record was complete for the first-room cases can ever affect map-reading tasks from the outdoor set.
  4. DThe procedures that stayed the same were probably responsible for the changed result.
Why B is correct — and why the others are not

Since the other procedures stayed the same, the changed result most strongly supports an inference about landmark labels only when every record was complete for the first-room cases. This matches the evidence or condition involving map-reading tasks from the outdoor set. A final check is checking whether the sentence completion is grammatical and logical.

A. This reverses the inference; the team treated the changed result as evidence about the changed feature.

C. This overstates the evidence; the passage supports a likely effect in this study, not a universal proof.

D. This assigns the result to the unchanged procedures, but those procedures were held constant as controls.

Information and Ideas · medium

Based on the text, which conclusion is most reasonable?

  1. AThe changed part of the study had no likely effect on the outcome for basalt samples from the short-duration set.
  2. BThe study proved that no factor other than crystal size when a second reader checked the evidence for the lower-shelf examples can ever affect basalt samples from the short-duration set.
  3. CThe change involving crystal size when a second reader checked the evidence for the lower-shelf examples likely affected the outcome for basalt samples from the short-duration set.correct
  4. DThe procedures that stayed the same were probably responsible for the changed result.
Why C is correct — and why the others are not

Since the other procedures stayed the same, the changed result most strongly supports an inference about crystal size when a second reader checked the evidence for the lower-shelf examples. The final step answers the prompt as it applies to basalt samples from the short-duration set. A final check is matching the transition to the logical relationship.

A. This reverses the inference; the team treated the changed result as evidence about the changed feature.

B. This overstates the evidence; the passage supports a likely effect in this study, not a universal proof.

D. This assigns the result to the unchanged procedures, but those procedures were held constant as controls.

Information and Ideas · hard

Which choice follows most directly from the information in the text?

  1. AThe changed part of the study had no likely effect on the outcome for podcast transcripts from the west-side group.
  2. BThe study proved that no factor other than episode length only for examples that met the stated rule for the north-side cases can ever affect podcast transcripts from the west-side group.
  3. CThe procedures that stayed the same were probably responsible for the changed result.
  4. DThe change involving episode length only for examples that met the stated rule for the north-side cases likely affected the outcome for podcast transcripts from the west-side group.correct
Why D is correct — and why the others are not

Since the other procedures stayed the same, the changed result most strongly supports an inference about episode length only for examples that met the stated rule for the north-side cases. The key support is the way the item treats podcast transcripts from the west-side group. A final check is matching a synthesis sentence to the stated purpose.

A. This reverses the inference; the team treated the changed result as evidence about the changed feature.

B. This overstates the evidence; the passage supports a likely effect in this study, not a universal proof.

C. This assigns the result to the unchanged procedures, but those procedures were held constant as controls.

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FAQ

Inferences questions

How strong should an SAT inference be?

Exactly as strong as the text. If the passage says a factor contributes, the answer cannot say it determines.

Can an inference add outside knowledge?

No. Everything needed is in the passage; a choice that requires you to know something extra is wrong.
Last reviewed 2026-08-28. Format and scoring facts sourced to College Board. Question counts describe the PrepScore bank, not the exam.
Same domain
Central Ideas and Details312 questionsCommand of Evidence - Textual312 questionsCommand of Evidence - Quantitative156 questions

Practise inferences until the trap stops working.

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