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Heart attacks

Expert replies
by BellTheGMAT » Tue Nov 30, 2010 1:17 am
Source - Grockit. Similar pattern is also available in OG12

Scientists studying the issue found that patients with slower heart rates tend to have far higher incidences of major depression, as compared to patients with normal or fast heart rates. The scientists conclude that the heart protects against both physical breakdown and depression.

The scientists' conclusion relies on which of the following assumptions?
A - High heartbeat protects against depression better than normal heartbeat.
B - Depression has effects on the body similar to those of physical breakdown.
C - Patients who have high heartbeats cannot develop depression.
D - Depression does not cause heart rates to decrease.
E - Psychiatric treatment of depression is less effective than treating physical illnesses.



I understand the OA is D, but can anyone let me know why B is wrong?

Premise - Patients with Low heart rate tend to have more depression than fast heart rate
Conclusion - Heart protects against Breakdown and depression

In above premise and Conclusion, there is no linkage between heart, breakdown and depression... So this should have been assumed.

Any hint or help would be appreciated....
Join the discussion
Source: — Critical Reasoning |

by sandy217 » Tue Nov 30, 2010 4:00 am
BellTheGMAT wrote:Source - Grockit. Similar pattern is also available in OG12

Scientists studying the issue found that patients with slower heart rates tend to have far higher incidences of major depression, as compared to patients with normal or fast heart rates. The scientists conclude that the heart protects against both physical breakdown and depression.

The scientists' conclusion relies on which of the following assumptions?
A - High heartbeat protects against depression better than normal heartbeat.
B - Depression has effects on the body similar to those of physical breakdown.
C - Patients who have high heartbeats cannot develop depression.
D - Depression does not cause heart rates to decrease.
E - Psychiatric treatment of depression is less effective than treating physical illnesses.





I understand the OA is D, but can anyone let me know why B is wrong?

Premise - Patients with Low heart rate tend to have more depression than fast heart rate
Conclusion - Heart protects against Breakdown and depression

In above premise and Conclusion, there is no linkage between heart, breakdown and depression... So this should have been assumed.

Any hint or help would be appreciated....

Answer D

Negate D .It weakens the argument.
B is not correct.
Just because heart rate protects against both physical breakdown and depression,
Depression need not have effects on the body similar to those of physical breakdown.
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by gmatdriller » Mon Nov 14, 2011 1:21 am
from the original question, can we also assume that
Physical breakdown does not cause heart rates to decrease?

We know that Low Heart rates ---> Physical breakdown + depression
So, to counter any weakness, we can defend against reversal
of any of the two effects.

Is this correct?
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by tuanquang269 » Mon Nov 14, 2011 2:09 am
This kind of question is exactly similar in reasoning with question about high and normal immune system and low immune system. I can see why is D
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