6.3 Comparing & Contrasting Two or More Texts

What Descriptor D3 Actually Tests

The third synthesis skill is compare and contrast elements (e.g., structure, style, point of view) of two or more texts. D3 is where the HiSET's paired-passage questions live. Instead of asking about one passage, D3 gives you two (occasionally three) passages on a related subject and asks you to compare them on a specific dimension: structure, style, point of view, tone, purpose, or use of evidence.

The College and Career Readiness Standards anchor D3 in two explicit benchmarks:

• RH.9-10.6: compare the point of view of two or more authors for how they treat the same or similar subject matter.
• RH.9-10.9: compare treatments of the same topic across several sources.

Both standards assume you have read each text on its own terms before you compare. That assumption is the basis of the strategy below.

The Paired-Passage Trap: Reading Two Texts at Once

The most common D3 mistake is reading both passages as if they were one continuous text. Test writers pair passages that share a topic, so it is tempting to treat them as complementary parts of a single argument. They are not. Each passage has its own author, stance, structure, and tone, and a D3 question asks you to see the differences, not blend them.

The defense is a disciplined reading order:

This five-step table is the core paired-passage strategy. The first three steps happen before you look at the answer choices. The last two happen with the question in mind.

The Two D3 Question Stems

D3 questions usually take one of two shapes, and recognizing the shape tells you what kind of answer to look for:

• "Which text..." / "Text A but not Text B..." — these ask you to identify a difference. The correct answer belongs to one passage and not the other. The trap is an answer that belongs to both, or that belongs to neither but feels true.
• "Both texts agree that..." / "Both passages suggest..." — these ask you to identify a shared point. The correct answer is a claim both passages support, even if they approach it differently. The trap is an answer that only one passage supports, dressed up as if both do.

The defense is the same for both: before you choose, confirm the answer is true of the passage(s) the question names. If a "both texts" choice is only true of Text A, reject it. If a "which text" choice is true of both, reject it.

Avoiding Attribution Errors

The most common D3 wrong-answer pattern is the attribution error: assigning one passage's view, evidence, or tone to the other. This happens most often when the passages share a topic but disagree. A reader who has blurred the two will assign Text A's conclusion to Text B, or Text B's evidence to Text A, and the distractors are built to catch exactly that mistake.

The fix is step 3 of the strategy table: state each author's position in one sentence before you look at the choices. If you have a crisp, separate sentence for each, attribution errors are much harder to make.

A Worked D3 Example

Here are two short informational passages in the style of a HiSET paired passage. Both are about urban trees, but they are written from different stances.

Passage A (from a city planning blog): Planting trees along city streets is one of the cheapest public health investments a municipality can make. Shade reduces surface temperatures by up to 10 degrees, which lowers heat illness in vulnerable neighborhoods. Roots absorb stormwater, reducing runoff into sewers. And street trees have been shown to correlate with lower asthma rates, though the mechanism is still being studied.

Passage B (from an infrastructure engineering report): Street trees conflict with sidewalks in measurable, costly ways. Root uplift cracks concrete within ten years on most species, creating trip hazards and ADA liability. Canopies drop debris into storm drains, increasing maintenance costs. A cost-benefit analysis for the 2024 fiscal year found that tree-related sidewalk repairs exceeded the city's entire tree-planting budget by a factor of three.

Question: Both passages discuss the effect of street trees on city infrastructure, but they differ in which of the following ways?

• A. Passage A focuses on benefits, while Passage B focuses on costs.
• B. Passage A argues against planting trees, while Passage B argues for it.
• C. Passage A is written in a formal tone, while Passage B is written in a casual tone.
• D. Passage A cites a cost-benefit analysis, while Passage B does not.

The correct answer is A. Passage A's evidence is all about benefits — shade, stormwater absorption, asthma correlation — while Passage B's evidence is all about costs — root uplift, debris in drains, repair costs exceeding budgets. Each passage stays on its own side of the benefit/cost line.

Option B is an attribution error: it reverses the passages' stances. Passage A favors trees; Passage B raises concerns. Option C is a tone claim the passages do not support — both are fairly neutral in tone, and neither is notably casual. Option D is a factual attribution error: it is Passage B, not Passage A, that cites a cost-benefit analysis. Notice how each distractor misattributes something from one passage to the other.

Checklist for D3 Questions

• Read each passage separately and note each author's main claim.
• State each author's position in one sentence before looking at the choices.
• Identify the comparison dimension the question stem names.
• For "which text" stems, confirm the answer is true of one passage and not both.
• For "both texts" stems, confirm the answer is true of both passages.
• Reject any choice that assigns one passage's view, evidence, or tone to the other.