Weaken the argument
60 flashcards covering Weaken the argument for the LSAT Logical Reasoning section.
Weakening an argument involves identifying ways to undermine its conclusion by challenging its assumptions, evidence, or reasoning. In logical terms, this means finding flaws or counterexamples that make the argument less convincing. For instance, if an argument claims that a new policy will reduce crime based on limited data, weakening it could involve pointing out alternative factors, like economic conditions, that the argument ignores. This skill is essential for critical thinking, as it helps evaluate the strength of claims in real-world scenarios like debates or legal analysis.
On the LSAT, weakening questions appear in the Logical Reasoning section, typically asking you to select an answer that exposes a vulnerability in the given argument. Common traps include choosing options that strengthen the argument or introduce irrelevant details, so focus on identifying unstated assumptions and testing for counterevidence. These questions often involve everyday scenarios, rewarding precise analysis of cause-and-effect or generalization flaws. Always look for answers that directly contradict the argument's core. A concrete tip: Target the argument's weakest link, like overlooked exceptions.
Terms (60)
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What is a weaken question?
A weaken question on the LSAT asks you to select an answer that most undermines or reduces the strength of the given argument by attacking its assumptions or evidence.
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Identifying assumptions
Assumptions are unstated beliefs in an argument that, if false, can weaken the conclusion; to weaken, find evidence that shows an assumption is incorrect.
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Counterexample to weaken
A counterexample weakens an argument by providing a specific instance that contradicts the general claim or pattern asserted in the argument.
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Alternative explanation
An alternative explanation weakens a causal argument by suggesting a different cause for the observed effect, thus undermining the original link.
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Undermining evidence
Undermining evidence weakens an argument by showing that the supporting facts are unreliable, incomplete, or misinterpreted.
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Questioning sample size
In arguments based on data, questioning a small or unrepresentative sample size weakens the conclusion by suggesting the results may not generalize.
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Flaws in analogies
Flaws in analogies weaken arguments by highlighting differences between the compared cases, making the analogy invalid for drawing conclusions.
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Overgeneralization
Overgeneralization weakens an argument when it applies a rule from a specific case to all cases without sufficient evidence, allowing counterexamples to undermine it.
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Hasty conclusions
Hasty conclusions weaken arguments by jumping to results based on insufficient evidence, which can be attacked by pointing out missing data.
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Appeal to authority weaknesses
Weaknesses in appeals to authority occur when the expert's credibility or relevance is questioned, thus undermining the argument's support.
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Ad hominem in arguments
An ad hominem attack weakens an argument by discrediting the person making it rather than addressing the substance, but in weaken questions, it might expose bias.
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False dichotomy
A false dichotomy weakens an argument by presenting only two options when more exist, allowing a third option to undermine the either-or claim.
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Circular reasoning flaws
Circular reasoning flaws weaken arguments by using the conclusion as a premise, which can be exposed by showing the argument assumes what it tries to prove.
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Post hoc ergo propter hoc
This fallacy weakens causal arguments by assuming one event causes another just because it preceded it, which can be undermined by alternative timelines.
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Slippery slope issues
Slippery slope issues weaken arguments by exaggerating a chain of events, which can be attacked by showing the predicted outcomes are unlikely or unsupported.
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Strategy for weaken questions
The strategy for weaken questions is to identify the argument's core assumption and choose an answer that directly challenges it without introducing new flaws.
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Looking for the conclusion
In weaken questions, looking for the conclusion helps focus on what needs to be undermined, as answers should target the main claim's validity.
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Evaluating premises
Evaluating premises in weaken questions involves checking if the supporting evidence is weak or flawed, which can directly undermine the argument.
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Common trap answers
Common trap answers in weaken questions are those that strengthen the argument or address irrelevant points, so avoid them by staying focused on weakening.
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Answers that strengthen instead
Answers that strengthen instead of weaken are traps because they support the argument, making it crucial to select options that do the opposite.
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Irrelevant information as a trap
Irrelevant information as a trap in weaken questions distracts by addressing unrelated aspects, weakening your ability to choose correctly if not ignored.
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Extreme language in answers
Extreme language in answers can weaken an argument by overstatement, but in questions, it's a trap if it goes beyond what's needed to undermine.
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Necessary vs. sufficient conditions
Confusing necessary and sufficient conditions weakens arguments by misapplying requirements, which can be exploited by showing a condition isn't met as assumed.
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Correlation vs. causation
Correlation vs. causation weakens arguments when a correlation is treated as causation, allowing alternative causes to undermine the link.
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Biased samples
Biased samples weaken arguments by skewing results, so pointing out the bias in the sample selection can invalidate the conclusion.
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Anecdotal evidence weaknesses
Anecdotal evidence weaknesses arise when personal stories are used as proof, which can be weakened by noting they don't represent broader trends.
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Expert opinion limitations
Expert opinion limitations weaken arguments if the expert's area of expertise doesn't apply, allowing challenges based on relevance.
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Statistical flaws
Statistical flaws weaken arguments through errors like improper averaging, which can be highlighted to question the data's reliability.
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Percentages vs. absolute numbers
Using percentages vs. absolute numbers can weaken arguments if the context misleads, such as ignoring small sample sizes in percentages.
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Time-related flaws
Time-related flaws weaken arguments by ignoring changes over time, allowing current evidence to contradict past-based claims.
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Cultural biases
Cultural biases weaken arguments by introducing skewed perspectives, which can be undermined by cross-cultural counterevidence.
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Scope shifts
Scope shifts weaken arguments by applying evidence from a narrow scope to a broader one, exploitable by showing the mismatch.
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Part-to-whole errors
Part-to-whole errors weaken arguments by assuming properties of parts apply to the whole, which can be challenged with counterexamples.
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Whole-to-part errors
Whole-to-part errors weaken arguments by attributing whole properties to parts, allowing specific exceptions to undermine them.
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Ambiguity in language
Ambiguity in language weakens arguments by allowing multiple interpretations, which can be exploited to show the conclusion doesn't hold under one meaning.
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Vague terms
Vague terms weaken arguments by lacking precision, enabling answers that clarify and reveal the term's inadequacy.
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Emotional appeals
Emotional appeals weaken arguments when they rely on feelings over facts, which can be undermined by rational counterpoints.
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Bandwagon fallacy
The bandwagon fallacy weakens arguments by claiming something is true because it's popular, allowing evidence of unpopularity to challenge it.
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Straw man argument
A straw man argument weakens the original position by misrepresenting it, but in weaken questions, exposing the distortion can undermine the critique.
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Red herring
A red herring weakens an argument by diverting attention to irrelevant issues, which can be countered by refocusing on the core claim.
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Begging the question
Begging the question weakens arguments by assuming the conclusion in the premises, exposed by rephrasing to show the circularity.
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Composition fallacy
The composition fallacy weakens arguments by assuming that what is true of parts is true of the whole, which can be weakened by counterexamples.
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Division fallacy
The division fallacy weakens arguments by assuming what is true of the whole is true of parts, allowing specific part-based evidence to undermine it.
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Equivocation
Equivocation weakens arguments through ambiguous word use, which can be attacked by clarifying the word's multiple meanings.
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No true Scotsman
No true Scotsman weakens arguments by redefining terms to exclude counterexamples, which can be undermined by pointing out the evasion.
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Gambler's fallacy
The gambler's fallacy weakens probability-based arguments by assuming past events affect independent future ones, contradicted by statistical norms.
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Weaken by analogy breakdown
Weaken by analogy breakdown involves showing key differences in compared items, thus invalidating the analogy's use in the argument.
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Weaken by alternative interpretation
Weaken by alternative interpretation offers a different reading of evidence that contradicts the argument's intended meaning.
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Weaken by additional evidence
Weaken by additional evidence introduces new facts that contradict or cast doubt on the original argument's premises.
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Weaken by context change
Weaken by context change shows how altering the situation makes the argument's assumptions invalid or inapplicable.
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Weaken by expert counterpoint
Weaken by expert counterpoint uses opposing expert opinion to challenge the credibility of the argument's sources.
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Weaken by statistical counterevidence
Weaken by statistical counterevidence presents data that directly contradicts the argument's statistical claims.
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Weaken by logical inconsistency
Weaken by logical inconsistency highlights contradictions within the argument's own logic or premises.
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Weaken by premise contradiction
Weaken by premise contradiction shows that one part of the argument directly conflicts with another, undermining the whole.
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Weaken by future possibilities
Weaken by future possibilities introduces potential scenarios that could make the argument's prediction inaccurate.
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Weaken by historical counterexamples
Weaken by historical counterexamples uses past events that contradict the argument's historical pattern or claim.
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Weaken by definitional issues
Weaken by definitional issues challenges the argument by questioning or redefining key terms in a way that invalidates the conclusion.
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Weaken by measurement errors
Weaken by measurement errors points out inaccuracies in how data was collected or measured, thus discrediting the evidence.
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Weaken by conflicting studies
Weaken by conflicting studies references other research that opposes the argument's findings, casting doubt on its validity.
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Weaken by ethical considerations
Weaken by ethical considerations highlights moral flaws in the argument's reasoning, which can undermine its overall acceptability.