Mastering Command of Evidence (Textual) Questions on the Digital SAT

The "Command of Evidence" question type on the digital SAT is designed to test students' comprehension, analytical, and reasoning prowess as they interact with diverse text passages and informational graphics.

This guide will focus on the text-based variant - for the quantitative variant involving graphs and tables, see our Command of Evidence (Quantitative) Guide.

This segment demands that students proficiently source, interpret, evaluate, and integrate data from an array of textual and graphical presentations, promoting a holistic approach to various forms of information. Two forms of these questions exist, ones that look at scientific evidence, and ones that look at literary evidence.

Types of Evidence

Scientific Evidence

In scientific evidence questions, a hypothesis related to science or social science is presented, often in the light of recent research or experiments.

There's no need for prior scientific knowledge since all required information will be in the provided passage. Our role is to understand the proposed hypothesis, determine the research results that would validate it, and then pick the option that reflects those results.

This process might feel familiar, resembling science classes where you've probably had to validate or challenge a hypothesis based on experimental results.

Literary Evidence

Likewise, in literary evidence questions, a passage will present a viewpoint about a specific literary piece such as a poem or a novel. The options will then present quotations from that literary piece.

Prior knowledge of the discussed literary work isn't necessary either. However, we must be adept at assessing if the content of each quote directly substantiates the viewpoint mentioned in the question.

This task may resonate with experiences in English classes, where you've often extracted quotes from a text to bolster your points in analytical papers.

Example Question

Dr. Lena Hau's groundbreaking research proposes that certain nanostructures within synthetic materials can significantly enhance solar energy absorption, theorizing that these structures could mimic the light absorption efficiency of black holes. To investigate Hau's theory, a research team developed two types of solar panels: one embedded with the proposed nanostructures and a standard panel without them. Both were tested under identical conditions to gauge their performance.

Which result from the solar panel tests, if true, would most strongly support Dr. Hau's hypothesis?

How to Solve Command of Evidence (Textual) Questions

1. Read the Passage

Begin by thoroughly reading the passage. Understand Dr. Hau's primary hypothesis: using unique nanostructures in synthetic materials could potentially enhance solar energy absorption, emulating the efficiency of black holes.

2. Dissect the Question

Analyze what the question is asking: "Which result would most strongly support Dr. Hau's hypothesis?" This means you're looking for an option that would demonstrate an increase in efficiency of solar energy absorption due to the nanostructures, as that's the core of Hau's hypothesis.

3. Predict a Logical Outcome

Before looking at the options, think of what kind of evidence would support the hypothesis. Ideally, the nanostructured panel would show a significantly higher efficiency in converting solar energy compared to the standard, aligning with the hypothesis' black hole analogy.

4. Analyze Each Option

Evaluate the options in light of the theory and your logical prediction:

• Choice A suggests no improvement, conflicting with Hau's theory.
• Choice B implies the nanostructures had some effect but doesn't quantify energy absorption or efficiency, so it's indirect evidence.
• Choice C corresponds with your predicted evidence, showing a direct increase in efficiency, and hence supports Hau's hypothesis.
• Choice D discusses a side effect (heat increase), not directly related to energy efficiency.

5. Use Elimination

Rule out the options that don't strongly support the hypothesis (A, B, and D). Each has a reasoning flaw or irrelevance, leaving you with the strongest possible choice, C.

6. Confirm the Best Answer

Ensure that choice C doesn't just seem correct based on a quick read or assumption but that it aligns with all aspects of the hypothesis and provides the strongest evidence in favor. The key here is the direct relationship between increased efficiency (more energy) and the presence of nanostructures.

Tips and Tricks

Read Every Word Carefully

SAT often includes critical details in scientific hypotheses and research descriptions. Every word can count, and understanding each aspect is crucial.

Logical Prediction

Always predict the type of answer that would support the theory before looking at the options. It prevents you from getting swayed by plausible but incorrect choices.

Look for Direct Evidence

The correct answer will directly support the main aspect of the hypothesis or research question. Be wary of choices that seem related but don't offer clear, direct evidence.

Beware of Red Herrings

These are details or options that might seem relevant but don't directly address the main hypothesis or research question. They are distractions and often incorrect.

Trust the Passage

The passage is your primary and most reliable source of information. If you're confused, go back to the text. It's normal to need a refresher on details when under pressure.

Frequently Asked Questions