LSAT 146 – Section 1 – Question 22
LSAT 146 - Section 1 - Question 22
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Question QuickView |
Type | Tags | Answer Choices |
Curve | Question Difficulty |
Psg/Game/S Difficulty |
Explanation |
---|---|---|---|---|---|---|---|
PT146 S1 Q22 |
+LR
| Flaw or descriptive weakening +Flaw Causal Reasoning +CausR Sampling +Smpl | A
78%
166
B
2%
154
C
6%
157
D
9%
158
E
5%
159
|
146 154 161 |
+Harder | 149.45 +SubsectionMedium |
Summarize Argument
The author concludes that the regulation banning PCBs was effective in reducing human exposure to those chemicals. This is based on a study that measured the levels of toxic chemicals in the bodies of 11 volunteers. Although scientifically valid inferences can’t be drawn from the study, the author states that the study showed that younger people showed much lower levels of PCBs than older people. PCBs were banned in the 1970s.
Identify and Describe Flaw
Despite acknowledging that we can’t draw scientifically valid inferences from the study due to its small sample size, the author proceeds to draw a conclusion based on that study. The author contradicts himself.
A
takes an inconsistent stance regarding the status of the inferences that can be drawn from the study
The author’s stance regarding whether we can draw valid inferences from the study is inconsistent. The author first says we can’t. But the author then tries to draw a conclusion.
B
overlooks the possibility that two or more chemicals produce the same effects
This possibility doesn’t undermine the argument, because the reasoning doesn’t involve the effects of chemicals. The argument is based on a study that shows younger people in the study had lower levels of PCBs. The effects of PCBs, however, are not at issue.
C
concludes that a generalization has been proven true merely on the grounds that it has not been proven false
The author doesn’t reach the conclusion on the basis of a claim that nobody has proven that the regulation banning PCBs wasn’t effective. The conclusion is based on a study.
D
takes something to be the cause of a reduction when it could have been an effect of that reduction
It doesn’t make sense to think that a reduction in PCBs could cause the regulations banning PCBs. Not every cause and effect relationship can be reversed.
E
does not consider the possibility that PCBs have detrimental effects on human health several years after exposure
This possibility doesn’t undermine the argument, because the reasoning doesn’t involve the effects of chemicals. The argument is based on a study that shows younger people in the study had lower levels of PCBs. The effects of PCBs, however, are not at issue.
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LSAT PrepTest 146 Explanations
Section 1 - Logical Reasoning
- Question 01
- Question 02
- Question 03
- Question 04
- Question 05
- Question 06
- Question 07
- Question 08
- Question 09
- Question 10
- Question 11
- Question 12
- Question 13
- Question 14
- Question 15
- Question 16
- Question 17
- Question 18
- Question 19
- Question 20
- Question 21
- Question 22
- Question 23
- Question 24
- Question 25
Section 2 - Logical Reasoning
- Question 01
- Question 02
- Question 03
- Question 04
- Question 05
- Question 06
- Question 07
- Question 08
- Question 09
- Question 10
- Question 11
- Question 12
- Question 13
- Question 14
- Question 15
- Question 16
- Question 17
- Question 18
- Question 19
- Question 20
- Question 21
- Question 22
- Question 23
- Question 24
- Question 25
- Question 26
Section 3 - Logical Reasoning
- Question 01
- Question 02
- Question 03
- Question 04
- Question 05
- Question 06
- Question 07
- Question 08
- Question 09
- Question 10
- Question 11
- Question 12
- Question 13
- Question 14
- Question 15
- Question 16
- Question 17
- Question 18
- Question 19
- Question 20
- Question 21
- Question 22
- Question 23
- Question 24
- Question 25
- Question 26
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