It is currently 26 Jun 2017, 09:20

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# A researcher discovered that people who have low levels of

Author Message
TAGS:

### Hide Tags

Intern
Joined: 26 Jan 2004
Posts: 35
Location: US
A researcher discovered that people who have low levels of [#permalink]

### Show Tags

30 Mar 2004, 19:54
00:00

Difficulty:

(N/A)

Question Stats:

100% (00:00) correct 0% (00:00) wrong based on 3 sessions

### HideShow timer Statistics

A researcher discovered that people who have low levels of immune-system activity tend to score much lower on tests of mental health than do people with normal or high immune-system activity. The researcher concluded from this experiment that the immune system protects against mental illness as well as against physical disease.

The researcher's conclusion depends on which of the following assumptions?

A. High immune-system activity protects against mental illeness better than normal immune-system activity does.
B. Mental illness is similar to physical disease in its effects on body systems.
C. Peolple with high immune-system activity cannot develop mental illness.
D. Mental illness does not cause people's immune-system activity to decrease.
E. Psychological treatment of mental illness is not as effective as is medical treatment.
GMAT Club Legend
Joined: 15 Dec 2003
Posts: 4288

### Show Tags

30 Mar 2004, 20:18
D would be required as assumption
If D is negated and mental illnesses do cause people's immune-system activity to decrease, then the conclusion that it is the immune system which protects against mental illnesses would be wrong.

ie if A then B is not equivalent to if B then A.

D has to be assumed.
_________________

Best Regards,

Paul

Director
Joined: 03 Jul 2003
Posts: 652

### Show Tags

30 Mar 2004, 20:41
Another vote for D

Do you I need to add anything if the question is already asnwered by
Paul or Anand
Manager
Joined: 16 Oct 2003
Posts: 152
Location: India

### Show Tags

30 Mar 2004, 20:52
I would go for D too.

Atleast I have started to answer correctly now. Special thanks to Paul and Anandnk for that.
_________________

A 750 aspirant.

GMAT Club Legend
Joined: 15 Dec 2003
Posts: 4288

### Show Tags

30 Mar 2004, 21:36
monarc wrote:

B comes close but what if you negate B and say that "mental illness is different to physical disease in its effects on body systems"? This does little to directly attack the conclusion that the immune system can still protects against mental illness as well as against physical disease.

Let (I) = immune system
Let (B) = body system
Let (M) = mental illnesses
Let (P) = physical illnesses

The conclusion is that (I) protects against (M) as well as against (P)
Whether (M) or (P)'s effect on (B) is similar or different is irrelevant.
For instance, let's say that (M) give headaches and (P) give cramps. In this case, (M) and (P)'s effects on the (B) are different but they are irrelevant in destroying the claim that (I) can be as efficient in protecting against (M) as against (P). Hence, the conclusion still stands and B needs not be an assumption
_________________

Best Regards,

Paul

Intern
Joined: 26 Jan 2004
Posts: 35
Location: US

### Show Tags

31 Mar 2004, 07:07
I fell for B as I did not spend enough time to read rest of the choices as I was doing this under time crunch. What threw me off what was the fact that there is an implicit assumption here that Immune system protects physical health simply because it is proven that it protects mental health. But I guess this is not a strong enough assumption comapred to D as without D, argument falls apart.
Senior Manager
Joined: 02 Mar 2004
Posts: 327
Location: There

### Show Tags

12 Apr 2004, 11:47
I dont want to obscure the reasoning with jargon. However the question itself is a classic one.

Correlation b/w A and B --> A causes B. As known, one can draw many inferences from the correlation esp A --> B or B -->A. If one were to select A --> B, the other one B--> A would become a overriding rebuttal. In order to draw the conclusion the way it was drawn, one needs to assume "B does not cause A" or B --/--> A
Intern
Joined: 07 Apr 2014
Posts: 9
Re: A researcher discovered that people who have low levels of [#permalink]

### Show Tags

11 May 2016, 04:39
asagem99 wrote:
A researcher discovered that people who have low levels of immune-system activity tend to score much lower on tests of mental health than do people with normal or high immune-system activity. The researcher concluded from this experiment that the immune system protects against mental illness as well as against physical disease.

The researcher's conclusion depends on which of the following assumptions?

A. High immune-system activity protects against mental illeness better than normal immune-system activity does.
B. Mental illness is similar to physical disease in its effects on body systems.
C. Peolple with high immune-system activity cannot develop mental illness.
D. Mental illness does not cause people's immune-system activity to decrease.
E. Psychological treatment of mental illness is not as effective as is medical treatment.

I would go with D as weell. It seems the best answer among the rest.
Re: A researcher discovered that people who have low levels of   [#permalink] 11 May 2016, 04:39
Similar topics Replies Last post
Similar
Topics:
3 A researcher discovered that people with higher incidences of physical 3 29 Mar 2017, 04:54
Researchers have found that people who drink five or more cups of coff 2 02 Oct 2016, 11:21
15 Medical researchers discovered that people with an atypical 24 27 Mar 2017, 07:11
133 A researcher discovered that people who have low levels of 81 11 Dec 2016, 03:13
3 Researchers have discovered that caffeine can be as 12 01 Sep 2015, 12:03
Display posts from previous: Sort by