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Psychologists have studied the impact a person’s attitude

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Psychologists have studied the impact a person’s attitude [#permalink]

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New post 25 Apr 2017, 09:03
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Psychologists have studied the impact a person’s attitude has on his ability to accomplish tasks. In one study, a group of college students was outfitted with contraptions designed to administer soothing heat pulses to the students’ neck and shoulder muscles. The students were told that the pulses would enhance their performance of in-class assignments. Only half of these contraptions worked, but neither the students nor the psychologists were told which students would actually receive these pulses. This component of the experiment is often frustrated, however, because ___________

Which one of the following selections, if it is true, completes the sentence most appropriately?

(A) frequently the faces of the students who actually receive the pulses become a little flushed.
(B) students who believe they are receiving the warm pulses do better on their class assignments.
(C) students who participate in the studies are volunteers who must told that some of them will not receive the heat pulses.
(D) many students will not complete the experiment if the sessions last too long.
(E) many of the participating students suffer from tension headaches which readily respond to the heat pulses.
[Reveal] Spoiler: OA

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Re: Psychologists have studied the impact a person’s attitude [#permalink]

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New post 28 May 2017, 08:06
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Now I really don't know how I got that one right!
Here is my thinking:
This component of the study is often frustrated because:
We have to find answer choice where student or psychologist won't know who is receiving the pulses, as students' attitude will change and so will their ability to accomplish task.
Correct answer choice will then find out something by which we get to know who is receiving the pulses

(A) frequently the faces of the students who actually receive the pulses become a little flushed (So, does this mean that we actually get to know who is receiving the pulses? Not sure, move on!)
(B) students who believe they are receiving the warm pulses do better on their class assignments (If this is the case, why would the component be frustrated, as this proves the first line of argument to be correct?)
(C) students who participate in the studies are volunteers who must told that some of them will not receive the heat pulses.(What? Its irrelevant!
(D) many students will not complete the experiment if the sessions last too long.Again, What?!? Its irrelevant!
(E) many of the participating students suffer from tension headaches which readily respond to the heat pulses.So this is similar to A, we get to know who is actually receiving the pusles, as the one receiving the pulse has the headache

No further clue, thought for a while and selected A.
Experts, help me find out why E is incorrect...
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Re: Psychologists have studied the impact a person’s attitude [#permalink]

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New post 28 May 2017, 11:03
Can somebody please help with the OE?
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Re: Psychologists have studied the impact a person’s attitude [#permalink]

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New post 11 Feb 2018, 22:50
AkshayKS21 wrote:
Now I really don't know how I got that one right!
Here is my thinking:
This component of the study is often frustrated because:
We have to find answer choice where student or psychologist won't know who is receiving the pulses, as students' attitude will change and so will their ability to accomplish task.
Correct answer choice will then find out something by which we get to know who is receiving the pulses

(A) frequently the faces of the students who actually receive the pulses become a little flushed (So, does this mean that we actually get to know who is receiving the pulses? Not sure, move on!)
(B) students who believe they are receiving the warm pulses do better on their class assignments (If this is the case, why would the component be frustrated, as this proves the first line of argument to be correct?)
(C) students who participate in the studies are volunteers who must told that some of them will not receive the heat pulses.(What? Its irrelevant!
(D) many students will not complete the experiment if the sessions last too long.Again, What?!? Its irrelevant!
(E) many of the participating students suffer from tension headaches which readily respond to the heat pulses.So this is similar to A, we get to know who is actually receiving the pusles, as the one receiving the pulse has the headache

No further clue, thought for a while and selected A.
Experts, help me find out why E is incorrect...



Hi,

This is how I analysed too. However if you see choice E then it says that students who participated had a history of tension headaches. And this responds to the heat pulses. But if such as student gets a headache then the observer cannot know if it is due to the device or due to history. Hence these students are exposed..Possibly this is why it is less stressful or irritating. Where as option A clearly exposes the students.

I however got the answer wrong. And had marked the E.
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Re: Psychologists have studied the impact a person’s attitude [#permalink]

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New post 12 Feb 2018, 06:11
C-
Because those who are not intended to receive the heat pulses will also receive them.

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Re: Psychologists have studied the impact a person’s attitude [#permalink]

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New post 12 Feb 2018, 06:50
E cancels out since "many" of the students get headaches not "all" hence this cannot be the reason.
C & D are irrelevant and B actually would work in favour of the experiment analysis and not frustrate the component.
Hence A by elimination.
Re: Psychologists have studied the impact a person’s attitude   [#permalink] 12 Feb 2018, 06:50
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