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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. Prephrase: after reading the question stem - take a moment to mentally formulate your answer to the question stem.
Primary Objective #6
Fact test for Method of Reasoning questions
Primary Objective #7
Fundamental rules for strengthen - justify the conclusion and assumption questions
2. Assumes that only 2 courses of action are available when there may be others. n
General lack of relevant evidence for the conclusion
False dilemma
Words used to introduce a sufficient condition
One of the most commonly used stimulus structures is what? How are they recognized?
3. Percent - proportion - fraction - ratio - incidence - likelihood - probability - segment - share. n
Words used to introduce percentage ideas
Premise definition
Method of Reasoning
Circular reasoning
4. 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
Words used to introduce cause and effect relationships. (memorize)
Premise Indicators
Exceptional case/over generalization
Source argument AKA ad hominen
5. If - when - whenever - every - all - any - people who - in order to.
Words used to introduce a sufficient condition
How to identify Justify the Conclusion questions
Central assumption of causal conclusions
What to do when a stimulus that contains conditional reasoning is combined with a must be true question stem
6. An event or circumstance whose occurrence indicates that a necessary condition must also occur.
Rules for Family #2
Sufficient Condition
Justify the conclusion formula
Primary Objective #8
7. 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
Exceptional case/over generalization
Main Point Questions
One of the most commonly used stimulus structures is what? How are they recognized?
How to attack a causal conclusion
8. If the stimulus contains an argument - determine whether the argument is strong or weak.
Appeal Fallacies
3 incorrect answer traps (weaken)
Primary Objective #3
Numbers and percentage errors
9. 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
Counter Premise Indicators
Weaken question signal words
Logical negation
Common features of Resolve the Paradox
10. Thus - therefore - hence - consequently - as a result - so - accordingly - clearly - must be that - shows that - conclude that - follows that - for this reason.
Primary Objective #9
Primary Objective #6
Strengthen questions ask you to identify the answer choice that best supports the argument. 2 common features
Conclusion Indicators
11. Occurs when an author improperly equates a percentage with a definate quantity or vice versa. n
Quantity indicators
Primary Objective #2
How to strengthen an argument
Numbers and percentage errors
12. 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.
Family #1: Prove
Counter Premise Indicators
Quantity indicators
Weakening conditional reasoning
13. 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.
Primary Objective #2
Strengthen questions ask you to identify the answer choice that best supports the argument. 2 common features
Words used to introduce cause and effect relationships. (memorize)
How to identify Justify the Conclusion questions
14. Immediately look for the repeat or contrapositive in the answer choices. Avoid mistaken reversals and mistaken negations.
Family #2: Help
What to do when a stimulus that contains conditional reasoning is combined with a must be true question stem
How to determine the strength of an argument
Common features of Resolve the Paradox
15. Separate the answer choices into 'contenders' and 'loser'. After completing this process - review the contenders and decide which answer correct.
Words used to introduce cause and effect relationships. (memorize)
Internal contradiction AKA self contradiction
Primary Objective #6
Primary Objective #8
16. 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
Straw Man
Primary Objective #8
Errors of conditional reasoning
Assumption Negation Technique
17. 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?
Exceptional case/over generalization
Primary Objective #6
Typical assumption question stems
18. Determine whether the stimulus contains an argument or if it is only a set of factual statements. MUST recognize whether a conclusion is present.
Method of Reasoning questions
Internal contradiction AKA self contradiction
Justify the conclusion formula
Primary Objective #1
19. 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
Errors of conditional reasoning
Conclusion Indicators
Causal statements
Survey errors
20. 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
General lack of relevant evidence for the conclusion
Family #2: Help
Circular reasoning
Words used to introduce a sufficient condition
21. 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
Solving Parallel Reasoning questions in the order stated
Necessary Condition
Numbers and percentages Common misconceptions
Things to remember in regards to WEAKEN questions
22. Occurs when the author uses an analogy that is two disimilar to the original situation to be applicable. n
2 speaker questions
Mistaken Reversal
False analogy
Primary Objective #4
23. Carefully read and identify the question stem. DO NOT assume that certain words are automatically associated with certain questions types.
Primary Objective #5
Common features of Resolve the Paradox
3 quirks of assumption question answer choices
Survey errors
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
Words used to introduce a sufficient condition
Quantity indicators
Justify the conclusion formula
Uncertain use of a term or concept
25. 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
Incorrect answers in Point at Issue questions
Numbers and percentages Common misconceptions
Time shift errors
How to solve Justify questions mechanistically
26. 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
Primary Objective #1
3 incorrect answer traps (weaken)
Rules for Family #2
What to do when a stimulus that contains conditional reasoning is combined with a must be true question stem
27. If the stimulus contains an argument - identify the conclusion. If the stimulus contains a fact set - examine each fact.
Primary Objective #2
Numbers and percentage errors
Central assumption of causal conclusions
What to do when a stimulus that contains conditional reasoning is combined with a must be true question stem
28. 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
How to attack a causal conclusion
Weaken question signal words
False dilemma
Errors of conditional reasoning
29. Occurs when an author makes conflicting statements. n
Logical negation
Main Point Questions
Internal contradiction AKA self contradiction
Circular reasoning
30. 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
Words used to introduce numerical ideas
Survey errors
Common weakening scenarios
Central assumption of causal conclusions
31. 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?
Things to remember in regards to WEAKEN questions
Incorrect answers in Point at Issue questions
Conclusion definition
Quantity indicators
32. 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
How to solve Justify questions mechanistically
Circular reasoning
Primary Objective #7
Necessary Condition
33. Amount - quantity - sum - total - count - tally.n
Primary Objective #2
the unless equation (conditional reasoning)
Common features of Resolve the Paradox
Words used to introduce numerical ideas
34. 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
Premise Indicators
Incorrect Method of Reasoning answers
Method of Reasoning questions
LSAT Definition of 'either/or'
35. Read closely and know precisely what the author said. DO NOT GENERALIZE!.
Logical opposites
Circular reasoning
Incorrect answers in Point at Issue questions
Primary Objective #4
36. Then - only - only if - must - required - unless - except - until - without.
Primary Objective #4
Quantity indicators
Logical negation
Words used to introduce a necessary condition
37. 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
Appeal Fallacies
Exceptional case/over generalization
Words used to introduce cause and effect relationships. (memorize)
2 roles played by assumptions
38. 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
Rules for Family #1
How to identify Justify the Conclusion questions
Words used to introduce a necessary condition
Errors of conditional reasoning
39. Stimulus (affected or determined) ---> answer choices (accepted) AKA: Help Family assumption - justify the conclusion - strengthen/support - resolve the paradox.
Family #1: Prove
Family #4: Disprove
Premise definition
Family #2: Help
40. 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.
Premise Indicators
Words used to introduce cause and effect relationships. (memorize)
Family #4: Disprove
Words used to introduce numerical ideas
41. 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
Assumption Negation Technique
3 incorrect answer traps (weaken)
How to strengthen an argument
Words used to introduce a necessary condition
42. 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
Rules for Family #3
False dilemma
Words used to introduce percentage ideas
43. 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
Words used to introduce percentage ideas
How to strengthen an argument
Primary Objective #1
Assumptions and conditionality: the two types of answer choices normally produced are?
44. 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
Words used to introduce cause and effect relationships. (memorize)
Mistaken cause and effect
Necessary Condition
45. 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 necessary condition
Resolve the Paradox question stem features
Circular reasoning
Rules for Family #3
46. 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.
Mistaken Negation
Primary Objective #7
Conclusion Indicators
Internal contradiction AKA self contradiction
47. 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.
Primary Objective #7
What to do when a stimulus that contains conditional reasoning is combined with a must be true question stem
What is the biggest reason students miss questions?
How to approach causality and strengthen questions?
48. 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
Internal contradiction AKA self contradiction
How to identify Justify the Conclusion questions
False analogy
Conclusion Identification Method
49. If all 5 answer choices appear to be 'losers' - return to the stimulus and re-evaluate the argument.
Logical opposites
Primary Objective #9
Mistaken Reversal
Errors of composition and division
50. 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
2 speaker questions
2 roles played by assumptions
Words used to introduce a necessary condition
Primary Objective #1