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Test your basic knowledge |
LSAT Logical Reasoning Clues
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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. 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
Family #2: Help
2 speaker questions
Central assumption of causal conclusions
Counter Premise Indicators
2. 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
3 logical features of conditional reasoning
General lack of relevant evidence for the conclusion
Mistaken Negation
Rules for Family #2
3. Occurs when the author uses an analogy that is two disimilar to the original situation to be applicable. n
Sufficient Condition
False analogy
Mistaken Reversal
Weaken question signal words
4. 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
Words used to introduce percentage ideas
Primary Objective #7
Incorrect Method of Reasoning answers
Fact test for Method of Reasoning questions
5. If - when - whenever - every - all - any - people who - in order to.
Words used to introduce a sufficient condition
Family #1: Prove
Assumptions and causality: typical correct answer categories
Common weakening scenarios
6. Stimulus (affected or determined) ---> answer choices (accepted) AKA: Help Family assumption - justify the conclusion - strengthen/support - resolve the paradox.
Assumptions and conditionality: the two types of answer choices normally produced are?
Family #2: Help
'Additional' Premise Indicators
How to attack a causal conclusion
7. 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
Premise Indicators
Fact test for Method of Reasoning questions
Mistaken Reversal
8. 1. Increasing percentages automatically lead to increasing numbers. This is not necessarily true because the overall size of the group could get smaller. 2. Decreasing percentages automatically lead to decreasing numbers 3. Increasing numbers automat
Numbers and percentages Common misconceptions
Conclusion Identification Method
Words used to introduce percentage ideas
False dilemma
9. 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
Family #1: Prove
How to solve Justify questions mechanistically
Resolve the Paradox question stem features
Method of Reasoning questions
10. An event or circumstance whose occurrence indicates that a necessary condition must also occur.
Premise definition
Sufficient Condition
Conclusion Indicators
Primary Objective #8
11. Percent - proportion - fraction - ratio - incidence - likelihood - probability - segment - share. n
Weakening conditional reasoning
Survey errors
Words used to introduce percentage ideas
2 speaker questions
12. 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
3 incorrect answer traps (weaken)
Incorrect answers in Point at Issue questions
How to strengthen an argument
Primary Objective #7
13. Think about the structure of the argument before examining the answer choices. Do not expect to see the exact prephrase - there are too many variations. Make an abstract prephrase then examine each answer to see if it paraphrases the prephrase.n
How to solve Justify questions mechanistically
Prephrasing Method of Reasoning questions
False analogy
How to determine the strength of an argument
14. 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)
Family #3: Hurt
2 speaker questions
Primary Objective #1
15. 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
Primary Objective #5
Family #4: Disprove
Weakening conditional reasoning
Rules for Family #2
16. 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
3 incorrect answer traps (weaken)
Primary Objective #6
Assumptions and causality: typical correct answer categories
3 logical features of conditional reasoning
17. 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
Probability indicators
Numbers and percentages Common misconceptions
3 quirks of assumption question answer choices
Conclusion Indicators
18. 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
What is the biggest reason students miss questions?
Mistaken Reversal
False dilemma
How to identify Justify the Conclusion questions
19. 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.
LSAT Definition of 'either/or'
Weaken question signal words
One of the most commonly used stimulus structures is what? How are they recognized?
Quantity indicators
20. If the stimulus contains an argument - determine whether the argument is strong or weak.
Main Point Questions
Assumptions and conditionality: the two types of answer choices normally produced are?
Primary Objective #3
Logical opposites
21. If all 5 answer choices appear to be 'losers' - return to the stimulus and re-evaluate the argument.
Weakening conditional reasoning
Appeal Fallacies
Rules for Family #2
Primary Objective #9
22. 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+.
Family #3: Hurt
Numbers and percentage errors
Mistaken Reversal
Internal contradiction AKA self contradiction
23. Determine whether the stimulus contains an argument or if it is only a set of factual statements. MUST recognize whether a conclusion is present.
Conclusion definition
How to solve Justify questions mechanistically
Typical assumption question stems
Primary Objective #1
24. 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.
Uncertain use of a term or concept
Assumptions and causality: typical correct answer categories
How to solve Justify questions mechanistically
Common features of Resolve the Paradox
25. 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
Typical assumption question stems
Primary Objective #1
Primary Objective #2
How to approach causality and strengthen questions?
26. 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.
Weaken question signal words
What is the biggest reason students miss questions?
LSAT Definition of 'either/or'
Things to remember in regards to WEAKEN questions
27. 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
Mistaken Reversal
Typical assumption question stems
LSAT Conclusion trick for Method AP questions
Family #2: Help
28. 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)
Family #3: Hurt
Family #2: Help
Rules for Family #2
29. 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 Definition of 'either/or'
Family #4: Disprove
Solving Parallel Reasoning questions in the order stated
2 roles played by assumptions
30. Premises + answer choice = conclusion When approaching answers - separate them into winners and losers - then apply the justify formula.
Justify the conclusion formula
'Additional' Premise Indicators
Errors of composition and division
LSAT Definition of 'either/or'
31. Read closely and know precisely what the author said. DO NOT GENERALIZE!.
False dilemma
Uncertain use of a term or concept
Primary Objective #4
Typical assumption question stems
32. Then - only - only if - must - required - unless - except - until - without.
Method of Reasoning questions
Words used to introduce a necessary condition
Strengthen questions ask you to identify the answer choice that best supports the argument. 2 common features
Source argument AKA ad hominen
33. 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
3 logical features of conditional reasoning
Appeal Fallacies
How to strengthen an argument
Primary Objective #5
34. Assumes that only 2 courses of action are available when there may be others. n
Fact test for Method of Reasoning questions
'Additional' Premise Indicators
False dilemma
Time shift errors
35. 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
Straw Man
Primary Objective #2
Survey errors
36. 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
Prephrasing Method of Reasoning questions
Mistaken Reversal
Incorrect Method of Reasoning answers
37. 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?
Things to remember in regards to WEAKEN questions
Premise definition
Family #2: Help
Sufficient Condition
38. 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
Survey errors
'Additional' Premise Indicators
Causal statements
Solving Parallel Reasoning questions in the order stated
39. 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
3 logical features of conditional reasoning
Internal contradiction AKA self contradiction
Primary Objective #3
Rules for Family #3
40. 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
Rules for Family #2
Common features of Resolve the Paradox
Primary Objective #1
One of the most commonly used stimulus structures is what? How are they recognized?
41. 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
Justify the conclusion formula
Assumptions and conditionality: the two types of answer choices normally produced are?
Appeal Fallacies
Premise Indicators
42. Amount - quantity - sum - total - count - tally.n
Primary Objective #7
Words used to introduce numerical ideas
Conclusion definition
False dilemma
43. 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
What to do when a stimulus that contains conditional reasoning is combined with a must be true question stem
the unless equation (conditional reasoning)
Strengthen questions ask you to identify the answer choice that best supports the argument. 2 common features
44. Stimulus (accepted) --/-> answer choices (affected or determined) cannot be true.
Family #4: Disprove
Mistaken cause and effect
Words used to introduce numerical ideas
Probability indicators
45. 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
Words used to introduce cause and effect relationships. (memorize)
Prephrasing Method of Reasoning questions
Premise definition
2 speaker questions
46. Negates both conditions - creating a statement that does not have to be true. Given: A+ --> Study Mistaken Negation: Not A+ --> Not Study
Primary Objective #3
Causal statements
Mistaken Negation
Straw Man
47. Carefully read and identify the question stem. DO NOT assume that certain words are automatically associated with certain questions types.
Words used to introduce a sufficient condition
Rules for Family #3
Circular reasoning
Primary Objective #5
48. An event or circumstance whose occurrence is required in order for a sufficient condition to occur.
Logical negation
Primary Objective #1
Conclusion definition
Necessary Condition
49. Stimulus (affected or determined)--/-> answer choices (accepted) Negative sign on the arrow reflects attacking or hurting the argument (weaken).
LSAT Conclusion trick for Method AP questions
Weakening conditional reasoning
Quantity indicators
Family #3: Hurt
50. 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
Conclusion Indicators
Survey errors
Primary Objective #2
Errors of conditional reasoning
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