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by bbirdwell
Mon Nov 09, 2009 11:34 am
 
Forum: PrepTest 56 - December 2008 LSAT Answers & Explanations - LR
Topic: Pt 56, S2, Q15 - If Agnes's research proposal is approved
Replies: 0
Views: 1400
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Pt 56, S2, Q15 - If Agnes's research proposal is approved

This argument is filled with conditional statements and, on the surface, appears convoluted. It’s best to take each piece and understand the underlying logic. The first sentence states that if Agnes’s proposal is approved, then the fourth floor lab will be cleaned out. Next, we learn that if Immanue...
by bbirdwell
Wed Dec 09, 2009 4:38 pm
 
Forum: PrepTest 48 - December 2005 LSAT Answers & Explanations - LR
Topic: PT48, S4, Q25 Therapist: In a recent study, researchers
Replies: 0
Views: 2740
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PT48, S4, Q25 Therapist: In a recent study, researchers

25. (B) Question Type: Identify a Flaw Always be wary of study-based arguments that utilize statistics. Making invalid inferences from percentages is a common logical error on the LSAT. The form this usually takes is incorrectly shifting either between actual numbers and percentages, or between perc...
by bbirdwell
Wed Dec 09, 2009 4:31 pm
 
Forum: PrepTest 48 - December 2005 LSAT Answers & Explanations - LR
Topic: PT48, S4, Q22 If there is an election, you can either vote
Replies: 2
Views: 2561
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PT48, S4, Q22 If there is an election, you can either vote

22. (D) Question Type: Application: Match the Reasoning First we need to strip the content of the argument and pare it down to its logical essentials. Here, this looks something like this: If X (election) -> option 1 or 2 (vote or not) If option 1 -> result A (satisfaction) If option 2 -> r...
by bbirdwell
Wed Dec 09, 2009 4:28 pm
 
Forum: PrepTest 48 - December 2005 LSAT Answers & Explanations - LR
Topic: PT48, S4, Q19 Fifty chronic insomniacs participated in a one
Replies: 0
Views: 2159
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PT48, S4, Q19 Fifty chronic insomniacs participated in a one

19. (D) Question Type: Explain a Result A group of insomniacs are being studied for one month at an institute. Half are given a new drug, half are given a placebo. The results for both groups are exactly the same: 80% report relief in the first two weeks, and then, in the third week, 90% of that 80%...
by bbirdwell
Wed Dec 09, 2009 4:25 pm
 
Forum: PrepTest 48 - December 2005 LSAT Answers & Explanations - LR
Topic: PT48, S4, Q16 Economist: A tax is effective if it raises
Replies: 0
Views: 1885
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PT48, S4, Q16 Economist: A tax is effective if it raises

16. (C) Question Type: Application: Choose an Example to Illustrate a Principle This argument can be boiled down to two conditional statements: 1. Raise revenue & burden only and all those targeted ? effective 2. Do not raise revenue & cost significant $ to enforce ? ineffective Our task is ...
by bbirdwell
Wed Dec 09, 2009 4:23 pm
 
Forum: PrepTest 48 - December 2005 LSAT Answers & Explanations - LR
Topic: PT 48, S4, Q13 Columnist: Tagowa's testimony in the
Replies: 0
Views: 1982
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PT 48, S4, Q13 Columnist: Tagowa's testimony in the

13. (A) Question Type: Identify a Flaw After testifying in the trial, Tagowa stepped outside and publicly affirmed her belief that Pemberton was guilty. But, the jury found Pemberton not guilty. Hence, the author concludes that the jury did not believe Tagowa. The problem here centers on "belief." ...
by bbirdwell
Wed Dec 09, 2009 4:21 pm
 
Forum: PrepTest 48 - December 2005 LSAT Answers & Explanations - LR
Topic: PT 48, S4, Q10 The proposed coal-burning electric plant
Replies: 0
Views: 2234
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PT 48, S4, Q10 The proposed coal-burning electric plant

10. (E) Question Type: Assumption As indicated by the argument structure and the keyword "should," the conclusion of the argument is that the electric plant should be approved. The supporting premise for this conclusion is that no good arguments have been offered against the plant. The final senten...
by bbirdwell
Wed Dec 09, 2009 4:18 pm
 
Forum: PrepTest 48 - December 2005 LSAT Answers & Explanations - LR
Topic: PT48, S4, Q7 For many types of crops, hybrid strains have
Replies: 0
Views: 1934
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PT48, S4, Q7 For many types of crops, hybrid strains have

7. (C) Question Type: Explain a Result In test plantings, hybrid strains produced significantly higher yields. But in many parts of the world, hybrid strains have not led to increased yields. The correct answer will explain this. Answer choice (C) provides a reason why the test plantings out-perform...
by bbirdwell
Mon Nov 09, 2009 11:39 am
 
Forum: PrepTest 56 - December 2008 LSAT Answers & Explanations - LR
Topic: Pt 56, S2, Q19 - None of the students taking literature are
Replies: 0
Views: 1746
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Pt 56, S2, Q19 - None of the students taking literature are

Question Type: Inference This argument is best worked by symbolizing the statements. From the first sentence, we get L --> -P (contrapositive P --> -L). Next, we learn that some P = A. Finally, R --> -P and thus (P --> -R). We can (and should) "connect the dots" with these statements, b...
by bbirdwell
Mon Nov 09, 2009 11:36 am
 
Forum: PrepTest 56 - December 2008 LSAT Answers & Explanations - LR
Topic: PT 56, S2, Q17 - Glen: An emphasis on law's purely
Replies: 0
Views: 1261
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PT 56, S2, Q17 - Glen: An emphasis on law's purely

Question Type: Identify the Disagreement Glen states that 1. Emphasis on law procedure leads to indifference, and 2. Law should create virtuous citizens. Sara states that 1. Such a role (creating virtuous citizens) would be more dangerous than government’s being overprotective of individuals’ rights...
by bbirdwell
Mon Sep 14, 2009 2:47 pm
 
Forum: Manhattan LSAT Logic Challenges
Topic: Logic Challenge #13 - Dolphins
Replies: 11
Views: 5530
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Re: Fortnightly Logic Game #13: Dolphins

Excellent discussion, all! For the record, (B) is the correct answer to #6 because it violates the m/p/i rule. LSATLIFER's original post regarding this game includes a sound strategy for this question, I believe: Throw out the old rule and be sure to also rule out any deductions or inferences made w...
by bbirdwell
Mon Nov 09, 2009 11:32 am
 
Forum: PrepTest 56 - December 2008 LSAT Answers & Explanations - LR
Topic: PT 56, S2, Q13 - Heart attacks are most likely to occur
Replies: 0
Views: 783
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PT 56, S2, Q13 - Heart attacks are most likely to occur

Question Type: Explain a Result Heart attacks are most likely to occur on Mondays. Though it was once thought that this was related to work stress, new research shows that even unemployed retirees are more likely to have heart attacks on Mondays. This is the "unexpected" result typical of these que...
by bbirdwell
Mon Nov 09, 2009 11:31 am
 
Forum: PrepTest 56 - December 2008 LSAT Answers & Explanations - LR
Topic: PT 56, S2, Q11 - Lance: If experience teaches us nothing
Replies: 0
Views: 1027
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PT 56, S2, Q11 - Lance: If experience teaches us nothing

Question Type: Determine the Function Lance concludes that every general rule has an exception, as evidenced by experience. Frank argues that Lance’s conclusion is itself a general rule (" every general rule..."). He then states that since this rule cannot itself have an exception (a rule with no e...
by bbirdwell
Mon Nov 09, 2009 11:30 am
 
Forum: PrepTest 56 - December 2008 LSAT Answers & Explanations - LR
Topic: PT 56, S2, Q9 - Rifka: We do not need to stop and ask for
Replies: 0
Views: 1751
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PT 56, S2, Q9 - Rifka: We do not need to stop and ask for

Question Type: Determine the Function Rifka concludes that we do not need to stop for directions, because we’d only need to do that if we were lost. The implication is that we are not lost. Craig states that we are, in fact, lost, and that we therefore need to stop for directions. Craig arrives at a...
by bbirdwell
Mon Nov 09, 2009 11:28 am
 
Forum: PrepTest 56 - December 2008 LSAT Answers & Explanations - LR
Topic: PT 56, S2, Q7 - Dana intentionally watered the plant every
Replies: 0
Views: 937
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PT 56, S2, Q7 - Dana intentionally watered the plant every

Question Type: Match the Flaw This is a good example of how modifiers can create logical confusion _ in this case, the modifier "intentionally." Dana intentionally watered the plant. Her actions led to the plant’s death. Therefore Dana intentionally killed the plant? This conclusion is unwarranted....
by bbirdwell
Mon Nov 09, 2009 11:27 am
 
Forum: PrepTest 56 - December 2008 LSAT Answers & Explanations - LR
Topic: PT 56, S2, Q5 - Chinh: Television producers should not pay
Replies: 0
Views: 664
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PT 56, S2, Q5 - Chinh: Television producers should not pay

Question Type: Identify a Flaw Chinh compares TV producers and the viewing public to great painters and museum-goers. Lana says TV producers are more like CEOs than artists. Both parties utilize an analogy to make their argument, which is quite common on the LSAT. Lana disagrees with Chinh’s analogy...
by bbirdwell
Mon Nov 09, 2009 11:25 am
 
Forum: PrepTest 56 - December 2008 LSAT Answers & Explanations - LR
Topic: PT 56, S2, Q3 - Acme Corporation offers unskilled workers
Replies: 0
Views: 820
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PT 56, S2, Q3 - Acme Corporation offers unskilled workers

3. (B) Question Type: Weaken Ms. Garon worked as an assembly-line worker, requiring no special skills, and later became president of the company. Therefore, Acme offers unskilled workers excellent advancement opportunities. The glaring assumption here is that Ms. Garon was unskilled, simply because ...
by bbirdwell
Mon Nov 09, 2009 11:24 am
 
Forum: PrepTest 56 - December 2008 LSAT Answers & Explanations - LR
Topic: PT 56, S2, Q1 - This region's swimmers generally swim during
Replies: 0
Views: 924
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PT 56, S2, Q1 - This region's swimmers generally swim during

1. (E) Question Type: Identify a Flaw People don’t swim at night because they’re afraid of sharks. All recent shark attacks have occurred in the daytime. The author concludes from these facts that swimming at night is NOT more "dangerous" than swimming during the day. Reading like a debater, a ques...
by bbirdwell
Thu Oct 29, 2009 11:26 am
 
Forum: Game #3 - Park Trees
Topic: Diagram
Replies: 7
Views: 5549
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Diagram

Here's a solution for this game. Feel free to post questions!
by bbirdwell
Fri Oct 02, 2009 11:53 am
 
Forum: Game #4 - Maggie's Deli
Topic: Diagram
Replies: 5
Views: 3890
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Re: PT47, S4, G4, Maggie's Deli is open exactly

Here's my explanation for this game. If you have any questions, post away!