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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. 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.
Mistaken Reversal
Premise Indicators
Logical negation
General lack of relevant evidence for the conclusion
2. 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
Words used to introduce cause and effect relationships. (memorize)
Primary Objective #5
2 roles played by assumptions
Family #4: Disprove
3. 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
How to determine the strength of an argument
False dilemma
Common features of Resolve the Paradox
Counter Premise Indicators
4. 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
Premise Indicators
How to identify Justify the Conclusion questions
Straw Man
Logical negation
5. A fact - proposition or statement from which a conclusion is made. Ask: What reasons has the author used to persuade me? Why should I believe this argument? What evidence exists?
Incorrect Method of Reasoning answers
Uncertain use of a term or concept
Premise definition
Words used to introduce a necessary condition
6. If the stimulus contains an argument - determine whether the argument is strong or weak.
Primary Objective #3
Assumptions and causality: typical correct answer categories
Fact test for Method of Reasoning questions
False analogy
7. If an answer choice describes an event that did not occur in the stimulus - then that answer is incorrect. Watch for answers that are partially true - that is answers that contain a description of something that happened in the argument but that also
Numbers and percentages Common misconceptions
Fact test for Method of Reasoning questions
How to strengthen an argument
Errors of composition and division
8. A. Eliminate any alternate causes for the stated effect. B. Show that when the cause occurs - the effect occurs. C. Show that when the cause does not occur - the effect does not occur. D. Eliminate the possility that the stated relationship is revers
How to approach causality and strengthen questions?
'Additional' Premise Indicators
One of the most commonly used stimulus structures is what? How are they recognized?
Strengthen questions ask you to identify the answer choice that best supports the argument. 2 common features
9. Assumes that only 2 courses of action are available when there may be others. n
Strengthen questions ask you to identify the answer choice that best supports the argument. 2 common features
False dilemma
Appeal Fallacies
Words used to introduce percentage ideas
10. 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
Prephrasing Method of Reasoning questions
Premise definition
Central assumption of causal conclusions
Mistaken cause and effect
11. To logically negate a conditional statement - negate the necessary condition. Example: neither...nor becomes either...or.
Logical negation
Method of Reasoning
2 roles played by assumptions
Family #4: Disprove
12. Prephrase: after reading the question stem - take a moment to mentally formulate your answer to the question stem.
General lack of relevant evidence for the conclusion
Common features of Resolve the Paradox
Errors of composition and division
Primary Objective #6
13. Authors misuses info to such a degree that they fail to provide any info to support their conclusion or they provide info that is irrelevant to their conclusion. n
General lack of relevant evidence for the conclusion
Words used to introduce numerical ideas
False analogy
False dilemma
14. 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+.
Appeal Fallacies
Straw Man
Mistaken Reversal
Common features of Resolve the Paradox
15. To raise a viewpoint at the beginning of the stimulus and then disagree with it immediately thereafter. The stimulus often begins with: Some people claim... Some people propose... Many people believe... Some argue that... Some critics claim... Some s
Straw Man
Family #4: Disprove
Conclusion definition
One of the most commonly used stimulus structures is what? How are they recognized?
16. 1. You can use only the info in the stimulus to prove the correct answer choice 2. Any answer choice that describes an element or a situation that does not occur in the stimulus is incorrect Method of Reasoning questions use a variety of formats - bu
Method of Reasoning questions
Uncertain use of a term or concept
Counter Premise Indicators
Words used to introduce a necessary condition
17. Then - only - only if - must - required - unless - except - until - without.
One of the most commonly used stimulus structures is what? How are they recognized?
Prephrasing Method of Reasoning questions
Words used to introduce a necessary condition
Logical opposites
18. 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
Incorrect Method of Reasoning answers
Assumptions and causality: typical correct answer categories
3 incorrect answer traps (weaken)
Fact test for Method of Reasoning questions
19. 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
How to attack a causal conclusion
Weakening conditional reasoning
How to solve Justify questions mechanistically
How to determine the strength of an argument
20. Percent - proportion - fraction - ratio - incidence - likelihood - probability - segment - share. n
Words used to introduce percentage ideas
3 incorrect answer traps (weaken)
Resolve the Paradox question stem features
Family #1: Prove
21. 1. The info in the stimulus is suspect. There are often reasoning errors present and depending on the question - you will help shore up the argument in some way. 2. The answer choices are accepted as given - even if they include 'new' info. Your task
Weaken question signal words
Method of Reasoning
Rules for Family #2
Logical negation
22. 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
Circular reasoning
Primary Objective #7
Logical negation
Numbers and percentage errors
23. Immediately look for the repeat or contrapositive in the answer choices. Avoid mistaken reversals and mistaken negations.
What to do when a stimulus that contains conditional reasoning is combined with a must be true question stem
Fact test for Method of Reasoning questions
Words used to introduce percentage ideas
Assumption Negation Technique
24. Stimulus (affected or determined)--/-> answer choices (accepted) Negative sign on the arrow reflects attacking or hurting the argument (weaken).
Justify the conclusion formula
Numbers and percentages Common misconceptions
Family #3: Hurt
Assumption Negation Technique
25. Stimulus (accepted) --/-> answer choices (affected or determined) cannot be true.
Mistaken cause and effect
Numbers and percentages Common misconceptions
Weakening conditional reasoning
Family #4: Disprove
26. Refer to the amount or quantity in the relationship. Examples: (do not need to memorize) all - every - most - many - several - sole - only - not all - none - few.
Method of Reasoning
One of the most commonly used stimulus structures is what? How are they recognized?
Primary Objective #4
Quantity indicators
27. 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?
Conclusion definition
What to do when a stimulus that contains conditional reasoning is combined with a must be true question stem
Quantity indicators
How to strengthen an argument
28. 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
Primary Objective #8
Fact test for Method of Reasoning questions
Assumptions and causality: typical correct answer categories
Primary Objective #6
29. 1. Appeal to authority - uses the opinion of an authority in an attempt to persuade the reader. The flaw is that the authority may not have relevant knowledge or all of the info regarding the situation - to there may be a difference of opinion among
Words used to introduce a necessary condition
Incorrect answers in Point at Issue questions
Words used to introduce cause and effect relationships. (memorize)
Appeal Fallacies
30. 1. The info in the stimulus is supect. There are often reasoning errors present - and you will further weaken the argument in some way. 2. The answer choices are accepted as given - even if they include 'new' info. The task is to determine which answ
Rules for Family #3
Primary Objective #4
2 roles played by assumptions
Resolve the Paradox question stem features
31. Quantity: All = 100 Not all = 0-99 Some = 1-100 None = 0 Time: Always - Not always - Sometimes - Never Space: Everywhere - Not everywhere - Somewhere - No where.
Time shift errors
Incorrect Method of Reasoning answers
Logical opposites
Common weakening scenarios
32. 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 -
Errors of composition and division
Mistaken Reversal
Probability indicators
Survey errors
33. Occurs when an author improperly equates a percentage with a definate quantity or vice versa. n
Numbers and percentage errors
Rules for Family #3
Primary Objective #4
Solving Parallel Reasoning questions in the order stated
34. Stimulus (affected or determined) ---> answer choices (accepted) AKA: Help Family assumption - justify the conclusion - strengthen/support - resolve the paradox.
Mistaken Reversal
Probability indicators
Primary Objective #5
Family #2: Help
35. Determine whether the stimulus contains an argument or if it is only a set of factual statements. MUST recognize whether a conclusion is present.
Primary Objective #1
Words used to introduce numerical ideas
Fundamental rules for strengthen - justify the conclusion and assumption questions
3 quirks of assumption question answer choices
36. 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
Method of Reasoning
Rules for Family #1
Logical opposites
Primary Objective #3
37. If all 5 answer choices appear to be 'losers' - return to the stimulus and re-evaluate the argument.
Primary Objective #9
Premise Indicators
Logical opposites
Assumption Negation Technique
38. 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
Method of Reasoning questions
Exceptional case/over generalization
Things to remember in regards to WEAKEN questions
Conclusion definition
39. Amount - quantity - sum - total - count - tally.n
Words used to introduce cause and effect relationships. (memorize)
Words used to introduce numerical ideas
Primary Objective #7
Premise Indicators
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
Primary Objective #5
Weakening conditional reasoning
Fundamental rules for strengthen - justify the conclusion and assumption questions
One of the most commonly used stimulus structures is what? How are they recognized?
41. 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.
Words used to introduce cause and effect relationships. (memorize)
Internal contradiction AKA self contradiction
Mistaken Reversal
Probability indicators
42. Separate the answer choices into 'contenders' and 'loser'. After completing this process - review the contenders and decide which answer correct.
3 incorrect answer traps (weaken)
Internal contradiction AKA self contradiction
Mistaken Negation
Primary Objective #8
43. 1. Identify the conclusion - this is what you are trying to strengthen 2. Personalize the argument 3. Look for weaknesses in the argument 4. Arguments that contain analogies or use surveys rely upon the validity of those analogies and surveys. Answer
How to approach causality and strengthen questions?
Primary Objective #9
False analogy
How to strengthen an argument
44. 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
Rules for Family #3
Errors of conditional reasoning
Main Point Questions
Uncertain use of a term or concept
45. Thus - therefore - hence - consequently - as a result - so - accordingly - clearly - must be that - shows that - conclude that - follows that - for this reason.
Strengthen questions ask you to identify the answer choice that best supports the argument. 2 common features
Conclusion Indicators
Errors of composition and division
Family #4: Disprove
46. 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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47. 1. The stem uses the word strengthen or a synonym (support - helps - most justifies) 2. The stem indicates that you should accept the answer choices are true.
Strengthen questions ask you to identify the answer choice that best supports the argument. 2 common features
Logical negation
One of the most commonly used stimulus structures is what? How are they recognized?
Probability indicators
48. 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 attack a causal conclusion
Assumption Negation Technique
Solving Parallel Reasoning questions in the order stated
Primary Objective #1
49. 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
Weaken question signal words
Counter Premise Indicators
Circular reasoning
Necessary Condition
50. 1. Incomplete info. The author fails to consider all of the possibilities or relies upon evidence that is incomplete. This flaw can be attacked by bringing up new possibilities or info. 2. Improper comparison. The author attempts to compare two or mo
General lack of relevant evidence for the conclusion
Common weakening scenarios
Fundamental rules for strengthen - justify the conclusion and assumption questions
How to determine the strength of an argument