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OG 2018 CR Q The kinds of hand

This topic has 2 expert replies and 0 member replies
lionsshare Senior | Next Rank: 100 Posts
Joined
09 Aug 2017
Posted:
62 messages

OG 2018 CR Q The kinds of hand

Post Thu Aug 24, 2017 2:10 pm
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    The kinds of hand and wrist injuries that result from extended use of a computer while maintaining an incorrect posture are common among schoolchildren in Harnville. Computers are important to the school curriculum there, so instead of reducing the amount their students use computers, teachers plan to bring about a sharp reduction in the number of these injuries by carefully monitoring their students' posture when using computers in the classroom.

    Which of the following would it be most useful to know in order to assess the likelihood that the teachers' plan will be successful?

    (A) Whether extended use of a computer while maintaining incorrect posture can cause injuries other than hand and wrist injuries
    (B) Whether hand and wrist injuries not caused by computer use are common among schoolchildren in Harnville
    (C) What proportion of schoolchildren in Harnville with hand and wrist injuries use computers extensively outside the classroom
    (D) Whether changes in the curriculum could reduce the schools' dependence on computers
    (E) What proportion of schoolchildren in Harnville already use correct posture while using a computer.

    OA: C

    Anyone has insights on why E is incorrect? I'd appreciate it.

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    Post Fri Aug 25, 2017 6:54 am
    lionsshare wrote:
    The kinds of hand and wrist injuries that result from extended use of a computer while maintaining an incorrect posture are common among schoolchildren in Harnville. Computers are important to the school curriculum there, so instead of reducing the amount their students use computers, teachers plan to bring about a sharp reduction in the number of these injuries by carefully monitoring their students' posture when using computers in the classroom.

    Which of the following would it be most useful to know in order to assess the likelihood that the teachers' plan will be successful?

    (A) Whether extended use of a computer while maintaining incorrect posture can cause injuries other than hand and wrist injuries
    (B) Whether hand and wrist injuries not caused by computer use are common among schoolchildren in Harnville
    (C) What proportion of schoolchildren in Harnville with hand and wrist injuries use computers extensively outside the classroom
    (D) Whether changes in the curriculum could reduce the schools' dependence on computers
    (E) What proportion of schoolchildren in Harnville already use correct posture while using a computer.

    OA: C

    Anyone has insights on why E is incorrect? I'd appreciate it.
    The proportion of schoolchildren who use correct posture doesn't matter. We know that some proportion are using incorrect posture, and that this posture is responsible for injuries. But if bad posture causes injuries, and many students are using bad posture at home, then simply correcting the posture at school isn't going to eliminate these injuries. C is the correct answer.

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    Post Sat Aug 26, 2017 9:58 am
    To add to what David said... this is a very common type of wrong answer on CR questions. Effectively, we have an argument that says "X is a problem, and we plan to do Y to fix it." Answer choices that try to qualify / circumscribe the problem itself are usually wrong:
    - "how many people does X effect?"
    - "does X effect some people more than others?"
    - "is X a bigger problem than other problems?"
    - "are some people not affected by problem X?"
    etc.

    We are already told that X is a problem, so specifying how big of a problem / for whom doesn't help. None of these will address the heart of the matter: will solution Y actually solve problem X?

    Does that help?

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