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Test your basic knowledge |
LSAT Logical Reasoning Clues
Start Test
Study First
Subjects
:
logic-and-reasoning
,
LSAT
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Caused by because of responsible for reason for leads to induced by promoted by determined by produced by product of played a role in was a factor in is an effect of.
Time shift errors
Typical assumption question stems
Words used to introduce cause and effect relationships. (memorize)
Method of Reasoning questions
2. Occurs when an author makes conflicting statements. n
Things to remember in regards to WEAKEN questions
Internal contradiction AKA self contradiction
Words used to introduce numerical ideas
What to do when a stimulus that contains conditional reasoning is combined with a must be true question stem
3. Supporter - the traditional linking role - where an assumption connects pieces of the argument. (often new or rogue pieces) They also can close gaps. Ex: All male citizens of athens had the right to vote. Therefore - Socrates had the right to vote in
LSAT Conclusion trick for Method AP questions
Causal statements
Appeal Fallacies
2 roles played by assumptions
4. Argument Part - If you do see the main conclusion at the end of a Method-AP problem - be prepared to answer a question about a part of the arguement other than the conclusion.n
Words used to introduce a sufficient condition
Method of Reasoning
Appeal Fallacies
2 roles played by assumptions
5. 1. Any 'new' element in the conclusion will appear in the correct answer. 2. Elements that are common to the conclusion and at least one premise normally do not appear in the correct answer. 3. Elements that appear in the premises but not the conclus
Time shift errors
Method of Reasoning questions
Primary Objective #5
How to solve Justify questions mechanistically
6. To weaken a conditional conclusion - attack the necessary condition by showing that the necessary condition does not need to occur in order for the sufficient condition to occur. With a combo of a conditional reasoning stimulus and a weaken question
Errors in the use of evidence
Weakening conditional reasoning
the unless equation (conditional reasoning)
Causal statements
7. Always ask: Do the given facts support the conclusion? Do the premises strongly suggest that the conclusion would be true? Does the conclusion feel like an inevitable result of the premises? Or Does the conclusion go beyond the scope of the info in t
Uncertain use of a term or concept
Family #2: Help
How to determine the strength of an argument
What is the biggest reason students miss questions?
8. Mistaken negation and reversal exp: taking the non-existence of something as evidence that a necessary precondition for that thing also did not exist' (MN) 'mistakes being sufficient to justify punishment for being required to justify it' (MR)n
Sufficient Condition
How to solve Justify questions mechanistically
Primary Objective #6
Errors of conditional reasoning
9. Used to introduce other premises that support the conclusion but are sometimes non-essential to the conclusion furthermore - moreover - besides - in addition - whats more - after all.
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10. Weaken - attack - undermine - refute - argue against - call into question - cast doubt - challenge - damage - counter - When evaluating answers ask yourself: 'Would this answer choice make the author reconsider his position or force the author to res
Premise Indicators
Weaken question signal words
Logical opposites
the unless equation (conditional reasoning)
11. Refer to the likelihood of occurence or the obligation present - as in 'The mayor should resign.' 'the law will never pass.' Examples: (do not need to memorize) must - will - always - not always - probably - likely - would - never - rarely - could -
Mistaken Reversal
Probability indicators
Words used to introduce a necessary condition
Incorrect answers in Point at Issue questions
12. 1. Opposite answers. These answers do the exact opposite of What is needed. 2. Shell game answers. Occurs when an idea or concept is raised in the stimulus and then a very similar idea appears in the answer choices - but the idea is changed just enou
Fact test for Method of Reasoning questions
3 incorrect answer traps (weaken)
Family #1: Prove
One of the most commonly used stimulus structures is what? How are they recognized?
13. 1. The stem uses the word assumption - presupposition or some variation 2. The stem NEVER uses the word 'if' or any other sufficient condition indicator. The stem will likely contain a necessary condition indicator such as required or unless. The cor
Numbers and percentages Common misconceptions
How to solve Justify questions mechanistically
Typical assumption question stems
Family #3: Hurt
14. A. Eliminates an alternate cause for the stated effect B. Shows that when the cause occurs - the effect occurs - assumption answers affirm the cause/effect relationship C. Show that when the cause does not occur - the effect doe not occur D. Eliminat
Assumptions and causality: typical correct answer categories
Words used to introduce percentage ideas
Primary Objective #7
Weakening conditional reasoning
15. They often feature 2 conclusions (main and sub.) - when the main conclusion is typically place in the first or second sentence and the last sentence contains the sub. conclusion. The sub. conclusion is set off by conclusion indicators while the main
LSAT Conclusion trick for Method AP questions
Words used to introduce percentage ideas
Family #1: Prove
3 logical features of conditional reasoning
16. 1. if you recognize the form of reasoning used in the stimulus (causal - conditional - etc.) immediately attack the answers and search for the answer with similar reasoning (analogy - circular reasoning) 2. The Conclusion - match the conclusions - to
Solving Parallel Reasoning questions in the order stated
How to attack a causal conclusion
How to determine the strength of an argument
Premise Indicators
17. The makers of the LSAT do not think that there are multiple causes for the same effect. When an LSAT speaker concludes that one occurance caused another - that speaker also assumes that the stated cause is the only possible cause of the effect and th
Strengthen questions ask you to identify the answer choice that best supports the argument. 2 common features
Central assumption of causal conclusions
'Additional' Premise Indicators
Logical negation
18. Mis-assessing the force of evidence is a frequent error committed by LSAT authors 1. Lack of evidence for a position is taken to prove that position is false 2. lack of evidence against a position is taken to prove that position is true 3. some evide
Errors in the use of evidence
Errors of conditional reasoning
Causal statements
How to attack a causal conclusion
19. If all 5 answer choices appear to be 'losers' - return to the stimulus and re-evaluate the argument.
How to determine the strength of an argument
Fundamental rules for strengthen - justify the conclusion and assumption questions
Primary Objective #9
Causal statements
20. As an argument progresses - the author must use each term in a constant - coherent fashion. using a term in different ways is inherently confusing and undermines the integrity of the argument. n
Family #2: Help
Uncertain use of a term or concept
Logical negation
Primary Objective #9
21. Separate the answer choices into 'contenders' and 'loser'. After completing this process - review the contenders and decide which answer correct.
Primary Objective #2
Primary Objective #8
Errors of composition and division
'Additional' Premise Indicators
22. Because - since - for - for example - for the reason that - in that - given that - as indicated by - due to - owing to - this can be seen from - we know this by.
the unless equation (conditional reasoning)
Primary Objective #5
Premise Indicators
How to approach causality and strengthen questions?
23. 1. Watch for answers starting with the phrase 'at least one' or 'at least some'. When an assumption answer choice starts with one of these phrases it is usually right. But ALWAYS verify with A.N.T. 2. Avoid answers that claim an idea was the most imp
Rules for Family #3
Method of Reasoning
Conclusion definition
3 quirks of assumption question answer choices
24. 1. new element answers - an answer that describes something that did not occure or describes an element new to the argument cannot be correct 2. Half right - half wrong answers - LSAT makers like to start off with something that happened - then end w
Incorrect Method of Reasoning answers
Primary Objective #2
Mistaken Negation
Primary Objective #7
25. Then - only - only if - must - required - unless - except - until - without.
Words used to introduce a necessary condition
Conclusion Indicators
Primary Objective #2
One of the most commonly used stimulus structures is what? How are they recognized?
26. 1. An indication that the answer choices should be accepted as true 2. Keywords that indicate your task is to resolve the problem Action: Problem: Resolve Paradox Explain Contradiction Reconcile Discrepancy Conflict Puzzle *Attempt to prephrase Corre
2 roles played by assumptions
How to solve Justify questions mechanistically
Resolve the Paradox question stem features
LSAT Definition of 'either/or'
27. 1. ethical versus factual situations - when the stimulus addresses something ethical - a factual answer would be incorrect and vice versa 2. dual agreement or dual disagreement - often incorrect answer choices will supply statements that both speaker
LSAT Conclusion trick for Method AP questions
2 speaker questions
Incorrect answers in Point at Issue questions
General lack of relevant evidence for the conclusion
28. 1. The survey uses a biased sample 2. The survey questions are improperly constructed 3. Respondents to the survey give inaccurate responses. People do not always tell the truth when responding to surveys.n
Logical opposites
Survey errors
Primary Objective #3
Words used to introduce cause and effect relationships. (memorize)
29. An event or circumstance whose occurrence is required in order for a sufficient condition to occur.
Primary Objective #7
Necessary Condition
Solving Parallel Reasoning questions in the order stated
Common weakening scenarios
30. If the stimulus contains an argument - determine whether the argument is strong or weak.
Errors of composition and division
Primary Objective #3
Quantity indicators
How to determine the strength of an argument
31. Negates both conditions - creating a statement that does not have to be true. Given: A+ --> Study Mistaken Negation: Not A+ --> Not Study
3 quirks of assumption question answer choices
Mistaken Negation
Primary Objective #7
General lack of relevant evidence for the conclusion
32. The mistake involves assuming that conditions will remain constant over time - and that what was the case in the past will be the case in the future or present. n
Premise Indicators
Time shift errors
How to attack a causal conclusion
Method of Reasoning
33. Prephrase: after reading the question stem - take a moment to mentally formulate your answer to the question stem.
LSAT Definition of 'either/or'
2 speaker questions
Primary Objective #6
Mistaken Reversal
34. 1. assuming a causal relationship on the basis of the sequence of events 2. assuming a causal relationship when only a correlation exists 3. failure to consider an alternate cause for the effect or an alternate cause for both the cause and the effect
How to solve Justify questions mechanistically
Mistaken cause and effect
Primary Objective #6
Family #2: Help
35. Switches the elements in the sufficient and necessary conditions - creating a statement that does not have to be true. Given: A+ --> Study Mistaken Reversal: Study --> A+.
2 roles played by assumptions
Family #2: Help
Things to remember in regards to WEAKEN questions
Mistaken Reversal
36. Percent - proportion - fraction - ratio - incidence - likelihood - probability - segment - share. n
Words used to introduce cause and effect relationships. (memorize)
Primary Objective #6
Family #1: Prove
Words used to introduce percentage ideas
37. First Family The correct answer choice will be a rephrasing of the main conclusion of the argument. The conclusion is either in the middle or beginning of the stimulus. The correct answer choice must not only be true it also must summarize the author
Incorrect answers in Point at Issue questions
Counter Premise Indicators
Main Point Questions
Primary Objective #2
38. Occurs when an author attempts to attack an opponent's position by ignoring the actual statements made by the opposing speaker and instead distorts and refashions the argument - making it weaker in the process. Often prephrased by 'what you're saying
Family #2: Help
Straw Man
Primary Objective #9
Source argument AKA ad hominen
39. 1. Stimulus will contain an argument. Must isolate and identify and assess the premises and the conclusion. 2. Focus on the conclusion. Almost all correct Weaken answers impact the conclusion. 3. The info in the stimulus is suspect. There are often r
Things to remember in regards to WEAKEN questions
Central assumption of causal conclusions
Justify the conclusion formula
Premise definition
40. 1. The stimulus will almost always contain an argument you must identify - isolate and assess the premises and the conclusion of the argument 2. Focus on the conclusion. Almost all correct answer choices impact the conclusion 3. The info in the stimu
Fundamental rules for strengthen - justify the conclusion and assumption questions
What is the biggest reason students miss questions?
Words used to introduce a necessary condition
Weakening conditional reasoning
41. Thus - therefore - hence - consequently - as a result - so - accordingly - clearly - must be that - shows that - conclude that - follows that - for this reason.
Prephrasing Method of Reasoning questions
Method of Reasoning
Conclusion Indicators
Mistaken cause and effect
42. Usually have one male and one female. The female uses sound reasoning and the male uses flawed reasoning or makes a mistake. This is not always true - but more often than not.n
Incorrect Method of Reasoning answers
2 speaker questions
Central assumption of causal conclusions
Method of Reasoning questions
43. Takes a small number of intstances and treats those instances as if they support a broad - sweeping conclusion. Often appears as an incorrect answer.n
How to identify Justify the Conclusion questions
Exceptional case/over generalization
Numbers and percentages Common misconceptions
How to strengthen an argument
44. Whenever you identify a causal relationship in the conclusion of an LSAT problem - immediately prepare to either weaken or strengthen the argument. Tasks for Weaken questions...must always identify a causal conclusion. Then ask if there relationship
How to strengthen an argument
Weakening conditional reasoning
Conclusion Identification Method
How to attack a causal conclusion
45. An event or circumstance whose occurrence indicates that a necessary condition must also occur.
Assumptions and conditionality: the two types of answer choices normally produced are?
Quantity indicators
Sufficient Condition
Causal statements
46. The author assumes as true What is supposed to be proved. exp: 'this essay is the best because it is better than all the others'n
Premise definition
How to approach causality and strengthen questions?
Weaken question signal words
Circular reasoning
47. 1. The sufficient condition does not make the necessary condition occur. That is - the sufficient condition does not actively cause the necessary condition to happen. 2. Temporally speaking - either condition can occur first - or the two conditions c
Rules for Family #3
Fact test for Method of Reasoning questions
False analogy
3 logical features of conditional reasoning
48. A statement or judgement that follows from one or more reasons. Ask: What is the author driving at? What does the author want me to believe? What point follows from the others?
Rules for Family #2
Counter Premise Indicators
Central assumption of causal conclusions
Conclusion definition
49. Amount - quantity - sum - total - count - tally.n
Errors of conditional reasoning
How to attack a causal conclusion
Words used to introduce numerical ideas
Typical assumption question stems
50. 1. Stem uses the word 'if' or another sufficient indicator 2. Stem uses the phrase 'allows the conclusion to be properly drawn' or 'enables the conclusion to be properly drawn'. 3. Stem does not lessen the degree of justification. Never uses 'most ju
3 incorrect answer traps (weaken)
How to identify Justify the Conclusion questions
Words used to introduce a necessary condition
What is the biggest reason students miss questions?