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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. Stimulus (affected or determined) ---> answer choices (accepted) AKA: Help Family assumption - justify the conclusion - strengthen/support - resolve the paradox.
Sufficient Condition
False dilemma
Family #2: Help
Resolve the Paradox question stem features
2. This type of flawed argument attacks the person (or source) instead of the argument they advance. because the LSAT is concerned solely with argument forms - a speaker can never validly attack the character or motives or a person; instead - a speaker
Uncertain use of a term or concept
Sufficient Condition
the unless equation (conditional reasoning)
Source argument AKA ad hominen
3. 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
Exceptional case/over generalization
Sufficient Condition
Words used to introduce a necessary condition
Strengthen questions ask you to identify the answer choice that best supports the argument. 2 common features
4. 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.
Words used to introduce a sufficient condition
the unless equation (conditional reasoning)
Strengthen questions ask you to identify the answer choice that best supports the argument. 2 common features
Primary Objective #3
5. Introduce something that actually contains an idea that is counter to the argument. By raising opposition - the author can minimize the damage that would be done by the objection if it were raised elsewhere. but yet - however - on the other hand - ad
Common weakening scenarios
Rules for Family #3
Counter Premise Indicators
Assumptions and conditionality: the two types of answer choices normally produced are?
6. 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
Numbers and percentage errors
Primary Objective #4
LSAT Definition of 'either/or'
Central assumption of causal conclusions
7. 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 #8
Primary Objective #1
Method of Reasoning
How to approach causality and strengthen questions?
8. 1. If conditional statements are linked together in the argument - the correct answer choice for an assumption question will typically supply a missing link in the chain or the contrapositive to that link. 2. If you see a conditional conclusion and t
Primary Objective #8
Conclusion definition
Mistaken Reversal
Assumptions and conditionality: the two types of answer choices normally produced are?
9. 1. No conclusion. When a stimulus does not have a conclusion and contains a paradox - expect a Resolve question 2. Language of contradiction exp: but - however - yet - although - paradoxically - surprisingly.
Things to remember in regards to WEAKEN questions
LSAT Definition of 'either/or'
Common features of Resolve the Paradox
Incorrect Method of Reasoning answers
10. 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
Straw Man
3 logical features of conditional reasoning
Mistaken Negation
2 roles played by assumptions
11. 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
Strengthen questions ask you to identify the answer choice that best supports the argument. 2 common features
Primary Objective #5
How to attack a causal conclusion
Things to remember in regards to WEAKEN questions
12. Always read each of the five answer choices. If an answer choice appears somewhat attractive - interesting or even confusing - keep it as a contender and move to the next answer.
Primary Objective #7
2 roles played by assumptions
Primary Objective #8
Incorrect Method of Reasoning answers
13. They h ave failed to fully and accurately identify the conclusion of the argument. If a conclusion is present - you MUST identify it prior to proceeding on to the question stem.
Prephrasing Method of Reasoning questions
Errors in the use of evidence
What is the biggest reason students miss questions?
Primary Objective #9
14. 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
How to attack a causal conclusion
Incorrect answers in Point at Issue questions
Errors in the use of evidence
2 roles played by assumptions
15. 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
Central assumption of causal conclusions
Fundamental rules for strengthen - justify the conclusion and assumption questions
Primary Objective #7
Words used to introduce cause and effect relationships. (memorize)
16. They can be in the premises or conclusion. If they are in the conclusion the argument is flawed. Classic mistaken cause and effect reasoning refers to occurences when a causal assertion is made in the conclusion or the conclusion presumes a causal re
Conclusion Identification Method
Causal statements
Straw Man
Words used to introduce cause and effect relationships. (memorize)
17. Percent - proportion - fraction - ratio - incidence - likelihood - probability - segment - share. n
Counter Premise Indicators
Primary Objective #4
Words used to introduce percentage ideas
False analogy
18. 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
Necessary Condition
Resolve the Paradox question stem features
Solving Parallel Reasoning questions in the order stated
Probability indicators
19. 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 answers in Point at Issue questions
Conclusion definition
the unless equation (conditional reasoning)
Premise definition
20. Then - only - only if - must - required - unless - except - until - without.
Probability indicators
Incorrect Method of Reasoning answers
Words used to introduce a necessary condition
Conclusion definition
21. At least on of the two - possibly both.
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22. 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
2 speaker questions
Words used to introduce cause and effect relationships. (memorize)
Resolve the Paradox question stem features
'Additional' Premise Indicators
23. Occurs when the author uses an analogy that is two disimilar to the original situation to be applicable. n
Main Point Questions
What to do when a stimulus that contains conditional reasoning is combined with a must be true question stem
Primary Objective #9
False analogy
24. 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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25. 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
Premise Indicators
Errors of conditional reasoning
Words used to introduce a sufficient condition
Family #3: Hurt
26. An event or circumstance whose occurrence indicates that a necessary condition must also occur.
Main Point Questions
Logical opposites
Mistaken cause and effect
Sufficient Condition
27. 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
How to determine the strength of an argument
Words used to introduce a sufficient condition
What is the biggest reason students miss questions?
3 quirks of assumption question answer choices
28. If all 5 answer choices appear to be 'losers' - return to the stimulus and re-evaluate the argument.
Errors of conditional reasoning
Primary Objective #9
LSAT Definition of 'either/or'
What to do when a stimulus that contains conditional reasoning is combined with a must be true question stem
29. 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
2 roles played by assumptions
Things to remember in regards to WEAKEN questions
False analogy
30. 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
Time shift errors
How to identify Justify the Conclusion questions
Incorrect answers in Point at Issue questions
Main Point Questions
31. Stimulus (accepted) ----> Answer Choices (affected or determined) AKA: must be or prove family must be true - main point - point at issue - method of reasoning - flaw in the reasoning - parallel reasoning.
'Additional' Premise Indicators
Rules for Family #2
Central assumption of causal conclusions
Family #1: Prove
32. Prephrase: after reading the question stem - take a moment to mentally formulate your answer to the question stem.
Words used to introduce cause and effect relationships. (memorize)
Assumptions and conditionality: the two types of answer choices normally produced are?
Primary Objective #6
Family #2: Help
33. 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
Typical assumption question stems
Rules for Family #1
Errors in the use of evidence
Primary Objective #5
34. Stimulus (affected or determined)--/-> answer choices (accepted) Negative sign on the arrow reflects attacking or hurting the argument (weaken).
LSAT Definition of 'either/or'
Errors of conditional reasoning
Family #3: Hurt
Primary Objective #8
35. If the stimulus contains an argument - identify the conclusion. If the stimulus contains a fact set - examine each fact.
Straw Man
Words used to introduce cause and effect relationships. (memorize)
Primary Objective #2
Rules for Family #3
36. 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
3 incorrect answer traps (weaken)
Justify the conclusion formula
Primary Objective #5
Solving Parallel Reasoning questions in the order stated
37. 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 #3: Hurt
Straw Man
Primary Objective #4
the unless equation (conditional reasoning)
38. Negates both conditions - creating a statement that does not have to be true. Given: A+ --> Study Mistaken Negation: Not A+ --> Not Study
Straw Man
Words used to introduce percentage ideas
Mistaken Negation
Errors of conditional reasoning
39. Stimulus (accepted) --/-> answer choices (affected or determined) cannot be true.
LSAT Conclusion trick for Method AP questions
Premise Indicators
Conclusion definition
Family #4: Disprove
40. 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
What is the biggest reason students miss questions?
General lack of relevant evidence for the conclusion
LSAT Definition of 'either/or'
Primary Objective #8
41. 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 strengthen an argument
General lack of relevant evidence for the conclusion
Mistaken cause and effect
Words used to introduce cause and effect relationships. (memorize)
42. 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
Premise definition
General lack of relevant evidence for the conclusion
LSAT Conclusion trick for Method AP questions
Weakening conditional reasoning
43. 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
Mistaken Negation
Method of Reasoning questions
Incorrect Method of Reasoning answers
Method of Reasoning
44. 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
Solving Parallel Reasoning questions in the order stated
2 roles played by assumptions
Appeal Fallacies
45. 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
Family #2: Help
How to identify Justify the Conclusion questions
Central assumption of causal conclusions
Family #3: Hurt
46. Carefully read and identify the question stem. DO NOT assume that certain words are automatically associated with certain questions types.
LSAT Conclusion trick for Method AP questions
Primary Objective #5
Rules for Family #3
Quantity indicators
47. 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
Common weakening scenarios
Uncertain use of a term or concept
Primary Objective #3
How to strengthen an argument
48. 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
Mistaken Reversal
Resolve the Paradox question stem features
Source argument AKA ad hominen
Family #1: Prove
49. Involves judgements made about groups and parts of a group. an error or composition occurs when the author attributes a characteristic of part of the group to the group as a whole or to each member of the group Error of division - author attributes c
What to do when a stimulus that contains conditional reasoning is combined with a must be true question stem
Errors of composition and division
'Additional' Premise Indicators
Exceptional case/over generalization
50. 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
Words used to introduce a sufficient condition
Errors of composition and division
Conclusion Identification Method
Rules for Family #2