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I assumed that "easily angered" is a psychological factor. That is how the stimulus is written, or at least what I understood.
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Psychologist: It is well known that becoming angry often induces temporary incidents of high blood pressure. A recent study further showed, however, that people who are easily angered are significantly more likely to have permanently high blood pressure than are people who have more tranquil personalities. Coupled with the long-established fact that those with permanently high blood pressure are especially likely to have heart disease, the recent findings indicate that heart disease can result from psychological factors.

Which one of the following would, if true, most weaken the psychologist’s argument?

Easily angered ---> permanently high BP ---> heart disease.
As per recent findings:
psychological factors(with permanently high BP) ---> hearth disease.

So, we need to find something that may lead to heart disease instead of psychological factors.
OR
What lead to anger itself?
OR
Psychological factors are in reverse caused by permanently high BP.
OR
Any other reverse causality.

(A) Those who are easily angered are less likely to recover fully from episodes of heart disease than are other people. - WRONG. Diverts from core of the passage.

(B) Medication designed to control high blood pressure can greatly affect the moods of those who use it. - WRONG. Again diverts.

(C) People with permanently high blood pressure who have tranquil personalities virtually never develop heart disease. - WRONG. Tranquil people are not concerned.

(D) Those who discover that they have heart disease tend to become more easily frustrated by small difficulties. - WRONG. It does look like a psychological factor but it doesn't touches upon the core that we are looking for.

(E) The physiological factors that cause permanently high blood pressure generally make people quick to anger. - CORRECT. Gives a reverse causality thus weakening the argument.

Answer E.
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AndrewN sir,

Can you please help, what is the flaw in my below reasoning?

Argument states: Anger (psychological factor)---->High Blood Pressure---->Heart Diseases
Also, Easily angered people----> Permanent high blood pressure.
Conclusion: It is likely that Psychological factor (anger)---->Heart Diseases

Option E: The physiological factors that cause permanently high blood pressure generally make people quick to anger.

Psychological Factor---->High Blood Pressure----> Quick to anger. It is actually supporting the conclusion

Option D: Those who discover that they have heart disease tend to become more easily frustrated by small difficulties.

Here, Heart Disease----> Anger. In this causality is reversed.

Option D should be the correct answer.
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AndrewN sir,

Can you please help, what is the flaw in my below reasoning?

Argument states: Anger (psychological factor)---->High Blood Pressure---->Heart Diseases
Also, Easily angered people----> Permanent high blood pressure.
Conclusion: It is likely that Psychological factor (anger)---->Heart Diseases

Option E: The physiological factors that cause permanently high blood pressure generally make people quick to anger.

Psychological Factor---->High Blood Pressure----> Quick to anger. It is actually supporting the conclusion

Option D: Those who discover that they have heart disease tend to become more easily frustrated by small difficulties.

Here, Heart Disease----> Anger. In this causality is reversed.

Option D should be the correct answer.
Hello, rocky620. The problem I have with (D) is the last part, by small difficulties. The answer would be stronger if it just cut off at frustrated. The argument is not concerned with the types of difficulties that lead to frustration—despite the mention of people who are easily angered—only with the chain of causality you have outlined above, so we cannot weaken the argument by pointing to small difficulties triggering a negative reaction. This is exactly the sort of specificity that often works against an answer choice.

One way to weaken the argument, as unraveled has noted above, is to knock out a link in the chain of causality that the argument builds upon. In the words of the passage:

becoming angrytemporary incidents of high blood pressure (line 1)

people who are easily angeredpermanently high blood pressure (line 2)

those with permanently high blood pressureheart disease (line 3, premise)

psychological factorsheart disease (line 3, conclusion)

In short, the above syllogism removes the middle links of the process. But what if something else were at work? That seems to be what (E) is driving at. Notice that this arrow of causality involves physiological factors (which may include psychological factors). As the name implies, physiological refers to physical processes (as well as chemical processes, but that is less pertinent here). If a larger bodily process [causes] permanently high blood pressure and [makes] people quick to anger, then we cannot say that psychological factors alone lead to the anger that purportedly leads to heart disease. In fact, it seems as though physiological factors → permanently high blood pressure → anger. The entire chain of logic has been broken.

I do not think this question would appear as is on the GMAT™; the LSAT is much more concerned with formal logic. Studier beware.

- Andrew
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just fyi to anyone who is super confused on how E is the answer.
The answer choice states physiological factors cause high BP and make people quick to anger.
By definition Physiological means - relating to the ways in which an organism's body part functions.

The question stem mentions "psychological factors" - which means relating to the mind (in this case getting angry).

they are 2 different words, while under duress in the exam it would be very easy to read both of them as the same word and make mistakes.

It is a silly mistake but still doesn't hurt to put this out there.
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Psychologist: It is well known that becoming angry often induces temporary incidents of high blood pressure. A recent study further showed, however, that people who are easily angered are significantly more likely to have permanently high blood pressure than are people who have more tranquil personalities. Coupled with the long-established fact that those with permanently high blood pressure are especially likely to have heart disease, the recent findings indicate that heart disease can result from psychological factors.

Which one of the following would, if true, most weaken the psychologist’s argument?

(A) Those who are easily angered are less likely to recover fully from episodes of heart disease than are other people.
Doesnt matter, argument still holds true, that heart disease can result from psychological factors

(B) Medication designed to control high blood pressure can greatly affect the moods of those who use it.
Trap. Medication can affect the mood but do we know it is anger? May be he is happy?

(C) People with permanently high blood pressure who have tranquil personalities virtually never develop heart disease.
So what? heart disease can still result from psychological factors. Argument still holds

(D) Those who discover that they have heart disease tend to become more easily frustrated by small difficulties.
Frustated doesn't mean anger/high blood pressure. So argument can still hold true.

(E) The physiological factors that cause permanently high blood pressure generally make people quick to anger.
If physiological factors can cause perm high blood pressure AND can also make people quick to anger. We know that anger(psychological factor) isnt the reason for high blood pressure so it weakens.
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KarishmaB GMATNinja AndrewN chetan2u MartyTargetTestPrep

I have a query. I understood that its a simple correlation to causation argument. The conclusion "the recent findings indicate that heart disease can result from psychological factors" is a very mild one however, in that even if i able to prove one instance of anger =can> permanent High BP => Heart disease, the psychologist is still good to go. My problem with option E "The physiological factors that cause permanently high blood pressure generally make people quick to anger" is that it states an alternative cause to permanent high BP and thereby heart diseases. While it may be that, in these instances, anger is just a byproduct of physiological factors, It may still hold that heart diseases Can be for psychological reasons. Hence, i felt this doesn't really have a -ve enough bearing on the argument.

While D has its own flaws in replacing anger with frustration, this option at least points out to the scope of reverse logic.

Kindly help,
Thanks in advance
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Psychologist: It is well known that becoming angry often induces temporary incidents of high blood pressure. A recent study further showed, however, that people who are easily angered are significantly more likely to have permanently high blood pressure than are people who have more tranquil personalities. Coupled with the long-established fact that those with permanently high blood pressure are especially likely to have heart disease, the recent findings indicate that heart disease can result from psychological factors.

Which one of the following would, if true, most weaken the psychologist’s argument?

(A) Those who are easily angered are less likely to recover fully from episodes of heart disease than are other people.

(B) Medication designed to control high blood pressure can greatly affect the moods of those who use it.

(C) People with permanently high blood pressure who have tranquil personalities virtually never develop heart disease.

(D) Those who discover that they have heart disease tend to become more easily frustrated by small difficulties.

(E) The physiological factors that cause permanently high blood pressure generally make people quick to anger.

Premises:
- Becoming angry often induces temporary incidents of high blood pressure.
- people who are easily angered are significantly more likely to have permanently high blood pressure (correlation between Anger and High BP)
- those with permanently high blood pressure are especially likely to have heart disease (correlation between High BP and heart disease)

Conclusion: Heart disease can result from psychological factors.

We need to weaken it (not break it, just weaken it). How do we weaken A causes B? By saying 'B could cause A' or 'C could cause both A and B.' Mind you, it is still possible that A causes B. We are just weakening it by saying that the relation could be reverse or a third agent may be causing both.


(A) Those who are easily angered are less likely to recover fully from episodes of heart disease than are other people.

Recovery from heart disease is out of scope.

(B) Medication designed to control high blood pressure can greatly affect the moods of those who use it.

We are assuming here that those with high BP are taking medicines for it. This is an unwarranted assumption. The argument does not say that people angered easily and those who are more likely to be taking medications for high BP. It says they are those who have high BP. Whether they know they have high BP and whether they are treating it is unknown.
Though, I would shortlist this option as a possible answer.

(C) People with permanently high blood pressure who have tranquil personalities virtually never develop heart disease.

People who are tranquil but have high BP are beyond our scope.

(D) Those who discover that they have heart disease tend to become more easily frustrated by small difficulties.

Similar to option (B), we are assuming here that those with high BP have discovered that they have high BP.

(E) The physiological factors that cause permanently high blood pressure generally make people quick to anger.

This says that other physiological factors cause both high BP and anger issues. We have weakened the argument. Not broken it, but weakened it. Conclusion is still possible but its likelihood has reduced.

Answer (E)
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