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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. 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
Conclusion Indicators
Common features of Resolve the Paradox
Rules for Family #2
Circular reasoning
2. If the stimulus contains an argument - determine whether the argument is strong or weak.
Circular reasoning
Primary Objective #3
Primary Objective #6
Words used to introduce percentage ideas
3. 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 percentage ideas
Strengthen questions ask you to identify the answer choice that best supports the argument. 2 common features
Premise Indicators
4. 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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5. 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
Typical assumption question stems
Exceptional case/over generalization
Circular reasoning
What to do when a stimulus that contains conditional reasoning is combined with a must be true question stem
6. Stimulus (affected or determined) ---> answer choices (accepted) AKA: Help Family assumption - justify the conclusion - strengthen/support - resolve the paradox.
Family #2: Help
3 logical features of conditional reasoning
One of the most commonly used stimulus structures is what? How are they recognized?
Family #3: Hurt
7. 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
Primary Objective #6
Incorrect answers in Point at Issue questions
One of the most commonly used stimulus structures is what? How are they recognized?
3 incorrect answer traps (weaken)
8. 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
Causal statements
LSAT Conclusion trick for Method AP questions
Counter Premise Indicators
Strengthen questions ask you to identify the answer choice that best supports the argument. 2 common features
9. 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.
Primary Objective #6
Words used to introduce cause and effect relationships. (memorize)
LSAT Definition of 'either/or'
Logical opposites
10. 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
Mistaken Reversal
Rules for Family #1
Words used to introduce a necessary condition
General lack of relevant evidence for the conclusion
11. 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)
Primary Objective #1
Internal contradiction AKA self contradiction
Source argument AKA ad hominen
12. Take the statements under consideration and place them in an arrangement that forces once to be the conclusion and the other(s) to be the premise (s). Use premise and conclusion indicators to achieve this end. Once the pieces are arranged - determine
Incorrect answers in Point at Issue questions
Fact test for Method of Reasoning questions
Uncertain use of a term or concept
Conclusion Identification Method
13. 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?
False analogy
Conclusion definition
Family #4: Disprove
Primary Objective #6
14. 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
Rules for Family #3
Assumptions and causality: typical correct answer categories
Prephrasing Method of Reasoning questions
15. 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
Assumption Negation Technique
Survey errors
Weaken question signal words
Fact test for Method of Reasoning questions
16. 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
What to do when a stimulus that contains conditional reasoning is combined with a must be true question stem
2 speaker questions
Mistaken cause and effect
3 logical features of conditional reasoning
17. 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
Mistaken Negation
3 incorrect answer traps (weaken)
How to determine the strength of an argument
Justify the conclusion formula
18. To logically negate a conditional statement - negate the necessary condition. Example: neither...nor becomes either...or.
Logical negation
3 logical features of conditional reasoning
Primary Objective #5
Central assumption of causal conclusions
19. At least on of the two - possibly both.
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20. If - when - whenever - every - all - any - people who - in order to.
Probability indicators
Family #4: Disprove
Resolve the Paradox question stem features
Words used to introduce a sufficient condition
21. 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
Words used to introduce a sufficient condition
Resolve the Paradox question stem features
Words used to introduce percentage ideas
Method of Reasoning
22. 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
Typical assumption question stems
Rules for Family #2
Numbers and percentage errors
Solving Parallel Reasoning questions in the order stated
23. 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
LSAT Definition of 'either/or'
Words used to introduce a necessary condition
Survey errors
'Additional' Premise Indicators
24. 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
Uncertain use of a term or concept
Sufficient Condition
Words used to introduce a sufficient condition
Probability indicators
25. 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.
Internal contradiction AKA self contradiction
Primary Objective #2
Quantity indicators
Primary Objective #7
26. 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
Family #1: Prove
Conclusion definition
Primary Objective #3
27. Amount - quantity - sum - total - count - tally.n
Sufficient Condition
Weakening conditional reasoning
Words used to introduce numerical ideas
3 logical features of conditional reasoning
28. 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
Survey errors
Straw Man
Weakening conditional reasoning
Premise Indicators
29. 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
Solving Parallel Reasoning questions in the order stated
3 quirks of assumption question answer choices
Counter Premise Indicators
30. 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?
Family #2: Help
Straw Man
Errors of composition and division
Premise definition
31. 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
Errors in the use of evidence
3 incorrect answer traps (weaken)
Prephrasing Method of Reasoning questions
Assumptions and causality: typical correct answer categories
32. Separate the answer choices into 'contenders' and 'loser'. After completing this process - review the contenders and decide which answer correct.
Primary Objective #8
Straw Man
How to approach causality and strengthen questions?
Family #1: Prove
33. 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 -
Incorrect answers in Point at Issue questions
Probability indicators
Logical negation
Conclusion Identification Method
34. 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
Assumptions and conditionality: the two types of answer choices normally produced are?
Primary Objective #4
Common features of Resolve the Paradox
Source argument AKA ad hominen
35. 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
Primary Objective #1
Errors of conditional reasoning
Internal contradiction AKA self contradiction
One of the most commonly used stimulus structures is what? How are they recognized?
36. 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.
Premise definition
Assumptions and causality: typical correct answer categories
Common features of Resolve the Paradox
Quantity indicators
37. 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
Words used to introduce percentage ideas
Internal contradiction AKA self contradiction
Errors of conditional reasoning
3 incorrect answer traps (weaken)
38. 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.
False analogy
Strengthen questions ask you to identify the answer choice that best supports the argument. 2 common features
Numbers and percentages Common misconceptions
What is the biggest reason students miss questions?
39. 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
Fact test for Method of Reasoning questions
Words used to introduce a sufficient condition
Straw Man
40. 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
Mistaken Reversal
Family #1: Prove
Incorrect answers in Point at Issue questions
How to strengthen an argument
41. 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
Sufficient Condition
Numbers and percentage errors
Primary Objective #5
Rules for Family #3
42. 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
Resolve the Paradox question stem features
Strengthen questions ask you to identify the answer choice that best supports the argument. 2 common features
LSAT Conclusion trick for Method AP questions
Method of Reasoning
43. 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
Mistaken Reversal
Mistaken Negation
2 roles played by assumptions
Solving Parallel Reasoning questions in the order stated
44. Occurs when the author uses an analogy that is two disimilar to the original situation to be applicable. n
False analogy
Numbers and percentages Common misconceptions
Probability indicators
Family #1: Prove
45. 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
Family #3: Hurt
Justify the conclusion formula
Central assumption of causal conclusions
Rules for Family #2
46. Immediately look for the repeat or contrapositive in the answer choices. Avoid mistaken reversals and mistaken negations.
Prephrasing Method of Reasoning questions
Primary Objective #4
One of the most commonly used stimulus structures is what? How are they recognized?
What to do when a stimulus that contains conditional reasoning is combined with a must be true question stem
47. Occurs when an author improperly equates a percentage with a definate quantity or vice versa. n
Assumptions and conditionality: the two types of answer choices normally produced are?
Numbers and percentage errors
Things to remember in regards to WEAKEN questions
3 logical features of conditional reasoning
48. 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
Errors of composition and division
How to strengthen an argument
Conclusion Indicators
Things to remember in regards to WEAKEN questions
49. An event or circumstance whose occurrence is required in order for a sufficient condition to occur.
Errors in the use of evidence
Main Point Questions
Weaken question signal words
Necessary Condition
50. 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
Solving Parallel Reasoning questions in the order stated
Source argument AKA ad hominen
Premise Indicators
Words used to introduce a necessary condition