LSAT 148 – Section 1 – Question 23

LSAT 148 - Section 1 - Question 23

December 2016

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Question
QuickView		 Type Tags Answer
Choices		 Curve Question
Difficulty		 Psg/Game/S
Difficulty		 Explanation
PT148 S1 Q23
+LR
Strengthen +Streng
Causal Reasoning +CausR
Sampling +Smpl
A
11%
158
B
20%
161
C
3%
158
D
13%
161
E
53%
165
149
161
174
 +Hardest 142.771 +SubsectionEasier

Editorial: Teenagers tend to wake up around 8:00 A.M., the time when they stop releasing melatonin, and are sleepy if made to wake up earlier. Since sleepiness can impair driving ability, car accidents involving teenagers driving to school could be reduced if the school day began later than 8:00 A.M. Indeed, when the schedule for Granville’s high school was changed so that school began at 8:30 A.M. rather than earlier, the overall number of car accidents involving teenage drivers in Granville declined.

Summarize Argument: Phenomenon-Hypothesis
The author concludes that car accidents involving teenagers driving to school could be reduced if the school day began later than 8am. This is based on the fact that teenagers tend to be sleepy if they wake up before 8am, and sleepiness can impair driving ability. In addition, when the Granville school’s schedule was changed to begin at 8:30am, the number of car accidents involving teenage drivers in Granville declined.

Notable Assumptions
The author assumes that Granville’s schedule change was the cause of the decrease in car accidents involving teenage drivers in Granville. The author also assumes that there wouldn’t be any effects of a later school start that might tend to increase the number of car accidents involving teenagers.

A
Teenagers start releasing melatonin later at night and stop releasing it later in the morning than do young children.
A comparison to young children has no clear impact. The argument concerns teenagers and is based on statistics concerning Granville’s high school. What children have to do with this statistic or the argument is unclear.
B
Sleepy teenagers are tardy for school more frequently than teenagers who are well rested when the school day begins.
Tardiness has no clear impact on whether starting the school day later can reduce the number of accidents involving teenagers. Whether teens become more or less tardy after the change doesn’t affect accident rates.
C
Teenagers who work at jobs during the day spend more time driving than do teenagers who attend high school during the day.
The argument concerns accidents involving teenagers driving to school and whether this can be reduced by having school start later. Some teenagers might not go to school in the day; they wouldn’t be affected by the later school start.
D
Many of the car accidents involving teenage drivers in Granville occurred in the evening rather than in the morning.
We still know that after the Granville school’s start time was changed, the overall number of car accidents involving teenage drivers declined. Maybe some of the decrease relates to the evening; the rest could relate to the morning.
E
Car accidents involving teenage drivers rose in the region surrounding Granville during the time they declined in Granville.
This strengthens by eliminating the possibility that the decreased accidents in Granville were simply the result of a region-wide trend unconnected to the change in school start time.

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LSAT PrepTest 148 Explanations

Section 1 - Logical Reasoning

Section 2 - Reading Comprehension

Section 3 - Logical Reasoning

Section 4 - Logical Reasoning

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