Rank 7 by frequency | 223 questions in corpus (4.9% of all questions)
A Principle (Supporting) question asks you to find a general rule, principle, or proposition that, if valid, would most help to justify, support, or underpin the argument's reasoning. The answer is a broad, abstract statement that makes the specific argument's logic work. This is not a standalone question family – it is a "Principle overlay" applied to the Justify/Strengthen family. The stimulus contains a specific argument; the answer choices contain general principles.
Identify the general rule that best justifies the argument. The principle should bridge the gap between the premises and conclusion at an abstract level. You are essentially finding the unstated "major premise" of a syllogism that the argument left implicit.
Your ability to move from the specific to the general – to identify what broad principle an argument implicitly relies on or would benefit from. Also tests your ability to see the structural relationship between a general rule and its specific application, and to recognize how conditional logic connects abstract rules to concrete cases.
1. Premises establish specific facts. The stimulus presents a concrete situation with specific details – particular people, events, entities, or scenarios.
2. A conclusion makes a specific judgment, recommendation, or claim. The author draws a conclusion about what should happen, what is right/wrong, what is justified, etc., in this particular case.
The conclusion is a specific application of an unstated general rule. The premises provide the factual conditions; the conclusion is the judgment that follows from applying the missing rule to those conditions. The logical structure is:
`` Unstated General Rule: If [condition], then [judgment] Stated Premise: This case has [condition] Stated Conclusion: Therefore, [judgment] applies here ``
The gap is the absence of a general principle that would connect the specific facts to the specific judgment. Without this principle, the reader might ask: "Why does this fact lead to that conclusion?" The principle provides the "because" – the broad rule under which the specific case falls.
This gap operates at the level of abstraction. The premises talk about X; the conclusion says Y about X; the principle says "whenever something has the properties of X, Y applies."
Correct answer: - States a general rule whose sufficient condition is met by the premises and whose necessary condition matches the conclusion - When the principle is applied to the specific facts, the conclusion follows logically (or is at least strongly supported) - May be phrased as a conditional, a universal claim, or a normative generalization - Often uses contrapositive form (the correct principle may be logically equivalent to but worded differently than what you might predict)
Incorrect answers: - State principles that, even if valid, do not connect these specific premises to this specific conclusion - May address the right topic area but get the logical direction wrong (e.g., reverse the conditional) - May be too narrow (not general enough to cover this case) or too broad (cover this case but also have unintended consequences the stimulus does not support) - May address a different aspect of the situation than the one the argument hinges on - May use necessary-condition language when sufficient-condition language is needed
Question stems: - "Which one of the following principles, if valid, most helps to justify the argument?" - "Which one of the following principles, if established, would justify the conclusion?" - "Which one of the following principles, if accepted, most strongly justifies drawing the conclusion above?"
How it works: The correct principle, combined with the premises, makes the conclusion logically follow or very nearly so. This is the most common subtype. It operates like a Sufficient Assumption question but with the answer expressed as a broad, abstract principle rather than a specific factual claim.
Question stems: - "Which one of the following general principles most strongly supports the recommendation?" - "Which one of the following principles, if valid, provides the strongest basis for [person]'s argument?" - "Which one of the following principles most helps to support the reasoning above?"
How it works: The correct principle makes the argument stronger but need not make it airtight. This is functionally a Strengthen question where the answer happens to be a general rule rather than a specific fact.
This is one of the most critical distinctions within this question type:
| Feature | Principle-Justify | Principle-Strengthen | |—|—|—| | Strength required | Makes argument valid or nearly valid | Makes argument stronger | | Stem language | "justify," "follows logically" | "supports," "provides basis" | | Hedging language | Minimal – "if established, would justify" | More – "most helps to support," "most strongly supports" | | Closeness to Sufficient Assumption | Very close – nearly identical task | More distant – closer to standard Strengthen | | How extreme the correct answer can be | Can be quite strong/absolute | Tends to be moderate |
Question stems: - "Which one of the following principles underlies the argument?" - "The reasoning above most closely conforms to which one of the following principles?"
Note: When the stem says the reasoning "conforms to" a principle and the answer choices are principles, this is technically classified by some prep companies as Principle-Conform (situation-to-principle direction). However, PowerScore and others classify it as part of the Principle-Supporting family when the stimulus contains an argument with a conclusion. The key determinant is whether you need to find a rule that justifies reasoning (Supporting) vs. a rule that merely describes or matches a pattern (Conform).
1. Abstractly restates the argument's implicit logic. The correct principle takes the specific reasoning pattern in the stimulus and expresses it as a general rule.
2. Uses conditional or universal language. Common forms: - "If [general condition], then [general judgment]" - "Any [category] that [condition] should [judgment]" - "[Things] that [property] are [evaluation]" - "One should [action] only if [condition]" (necessary condition form) - Contrapositives of the above
1. Reversed conditional: States the principle backward (e.g., "If [judgment], then [condition]" instead of "If [condition], then [judgment]"). This is the most common trap.
2. Wrong gap addressed: Bridges a gap that exists in the argument but is not the primary one the conclusion depends on.
The correct answer acts as the unstated major premise in a syllogism:
`` Correct Answer (Major Premise): All things with property P deserve judgment J Stimulus Premise (Minor Premise): This specific thing has property P Stimulus Conclusion: This specific thing deserves judgment J ``
1. Evaluative judgment: "X is good/bad/justified/unjustified because of [specific fact]." The missing principle links the fact to the evaluation.
2. Recommendation: "[Person/entity] should do X because [specific reason]." The missing principle is a general rule about when one should do X.
1. Contrapositive correct answers: The principle is worded as the contrapositive of what you would naturally predict, requiring you to translate.
2. Multiple gaps, one principle: The argument has several weaknesses, but the correct principle addresses the most fundamental one that the question targets.
1. Read the stimulus and identify the conclusion and premises. 2. Identify the gap: What evaluative leap does the conclusion make that the premises do not directly support? 3. Formulate the principle: Before looking at answer choices, ask: "What general rule, if true, would make this specific reasoning valid?" Try to phrase it as "If [general version of the premise conditions], then [general version of the conclusion]." 4. Scan answer choices for your predicted principle – remembering it may appear in contrapositive form. 5. Test the best candidate: Plug the principle in as a premise. Does the conclusion now follow?
Principle Supporting vs. Sufficient Assumption: - Sufficient Assumption answers are specific factual claims ("Marie is in California") - Principle Supporting answers are general, abstract rules ("Anyone in California is in the USA") - Sufficient Assumption stems say "if assumed" or "follows logically if" - Principle Supporting stems say "principle, if valid" or "principle most helps to justify" - Both aim to bridge the gap, but at different levels of abstraction
Principle Supporting vs. Strengthen: - Principle Supporting answers are always general rules/principles - Strengthen answers can be specific facts, evidence, or data - Principle Supporting often has "principle" in the stem - Both make the argument better; Principle-Justify makes it valid, Principle-Strengthen just makes it stronger
Principle & Application Skills – Connect abstract rules with specific cases.