It is currently 12 Dec 2017, 17:57

### 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 survey of a group of people between the ages of 75 and 80

Author Message
SVP
Joined: 04 May 2006
Posts: 1878

Kudos [?]: 1470 [0], given: 1

Schools: CBS, Kellogg
A survey of a group of people between the ages of 75 and 80 [#permalink]

### Show Tags

21 May 2009, 18:51
00:00

Difficulty:

(N/A)

Question Stats:

50% (00:22) correct 50% (01:32) wrong based on 12 sessions

### HideShow timer Statistics

A survey of a group of people between the ages of 75 and 80 found that those who regularly played the card game bridge tended to have better short-term memory than those who did not play bridge. It was originally concluded from this that playing bridge can help older people to retain and develop their memory. However, it may well be that bridge is simply a more enjoyable game for people who already have good short-term memory and who are thus more inclined to play.
In countering the original conclusion the reasoning above uses which one of the following techniques?
(A) challenging the representativeness of the sample surveyed
(B) conceding the suggested relationship between playing bridge and short-term memory, but questioning whether any conclusion about appropriate therapy can be drawn
(C) arguing that the original conclusion relied on an inaccurate understanding of the motives that the people surveyed have for playing bridge
(D) providing an alternative hypothesis to explain the data on which the original conclusion was based
(E) describing a flaw in the reasoning on which the original conclusion was based
_________________

Kudos [?]: 1470 [0], given: 1

Manager
Joined: 30 Mar 2009
Posts: 248

Kudos [?]: 207 [0], given: 1

### Show Tags

21 May 2009, 19:13
IMO E

A survey of a group of people between the ages of 75 and 80 found that those who regularly played the card game bridge tended to have better short-term memory than those who did not play bridge. It was originally concluded from this that playing bridge can help older people to retain and develop their memory. However, it may well be that bridge is simply a more enjoyable game for people who already have good short-term memory and who are thus more inclined to play.
In countering the original conclusion the reasoning above uses which one of the following techniques?
(A) challenging the representativeness of the sample surveyed --> no
(B) conceding the suggested relationship between playing bridge and short-term memory, but questioning whether any conclusion about appropriate therapy can be drawn -->no therapy conclusion is drawn then
(C) arguing that the original conclusion relied on an inaccurate understanding of the motives that the people surveyed have for playing bridge -->there are no original motives described here
(D) providing an alternative hypothesis to explain the data on which the original conclusion was based -->it's not about explain data, because data is flawless, but always true
(E) describing a flaw in the reasoning on which the original conclusion was based -->flaw: cause --> effect can be reversed to effect --> cause

Kudos [?]: 207 [0], given: 1

Manager
Joined: 15 May 2009
Posts: 168

Kudos [?]: 30 [0], given: 3

### Show Tags

22 May 2009, 22:12
sondenso wrote:
A survey of a group of people between the ages of 75 and 80 found that those who regularly played the card game bridge tended to have better short-term memory than those who did not play bridge. It was originally concluded from this that playing bridge can help older people to retain and develop their memory. However, it may well be that bridge is simply a more enjoyable game for people who already have good short-term memory and who are thus more inclined to play.
In countering the original conclusion the reasoning above uses which one of the following techniques?
(A) challenging the representativeness of the sample surveyed
(B) conceding the suggested relationship between playing bridge and short-term memory, but questioning whether any conclusion about appropriate therapy can be drawn
(C) arguing that the original conclusion relied on an inaccurate understanding of the motives that the people surveyed have for playing bridge
(D) providing an alternative hypothesis to explain the data on which the original conclusion was based
(E) describing a flaw in the reasoning on which the original conclusion was based

(A) The survey sample was not challenged in anyway
(B) There was no mention of any therapy being involved
(C) Motives were not part of either argument
(E) This is a little too general compared to choice (D), although it is somewhat of an close description.

(D) This is the most appropriate description of the argument; it reverses the causal link from "bridge --> better short term memory" to "good short term mem --> bridge".

Kudos [?]: 30 [0], given: 3

SVP
Joined: 04 May 2006
Posts: 1878

Kudos [?]: 1470 [0], given: 1

Schools: CBS, Kellogg

### Show Tags

23 May 2009, 02:31
sondenso wrote:
A survey of a group of people between the ages of 75 and 80 found that those who regularly played the card game bridge tended to have better short-term memory than those who did not play bridge. It was originally concluded from this that playing bridge can help older people to retain and develop their memory. However, it may well be that bridge is simply a more enjoyable game for people who already have good short-term memory and who are thus more inclined to play.
In countering the original conclusion the reasoning above uses which one of the following techniques?
(A) challenging the representativeness of the sample surveyed
(B) conceding the suggested relationship between playing bridge and short-term memory, but questioning whether any conclusion about appropriate therapy can be drawn
(C) arguing that the original conclusion relied on an inaccurate understanding of the motives that the people surveyed have for playing bridge
(D) providing an alternative hypothesis to explain the data on which the original conclusion was based
(E) describing a flaw in the reasoning on which the original conclusion was based

(A) The survey sample was not challenged in anyway
(B) There was no mention of any therapy being involved
(C) Motives were not part of either argument
(E) This is a little too general compared to choice (D), although it is somewhat of an close description.

(D) This is the most appropriate description of the argument; it reverses the causal link from "bridge --> better short term memory" to "good short term mem --> bridge".

Guys, what is difference btw D and E?
_________________

Kudos [?]: 1470 [0], given: 1

Senior Manager
Joined: 18 Aug 2009
Posts: 413

Kudos [?]: 145 [1], given: 16

Schools: UT at Austin, Indiana State University, UC at Berkeley
WE 1: 5.5
WE 2: 5.5
WE 3: 6.0

### Show Tags

18 Jan 2010, 23:12
1
KUDOS
The answer D says that the same data is used, but u are basically changing cause and effect relationship, which might mean as changing hypothesis.
Answer E is too general IMO, no flaw in reasoning is pointed out.
_________________

Never give up,,,

Kudos [?]: 145 [1], given: 16

Senior Manager
Joined: 18 Aug 2009
Posts: 413

Kudos [?]: 145 [0], given: 16

Schools: UT at Austin, Indiana State University, UC at Berkeley
WE 1: 5.5
WE 2: 5.5
WE 3: 6.0
Re: A survey of a group of people between the ages of 75 and 80 [#permalink]

### Show Tags

17 Nov 2011, 05:31
The difference between D and E is in the way these two choices describe the method the main conclusion of the argument used to counter initial conclusion given by the author of the argument.

Choice E says that the main conclusion points to the flaw in the reasoning of the initial conclusion. Yet, from reading the passage the second time you can understand that Initial conclusions desists that because A happens ---> B happens. But, the main conclusion clearly states that because B happens ----> A happens. Thus, referring to cause and effect relationship. By the way, this type of questions are very common in GMAT CR test.

Hope it helps,
_________________

Never give up,,,

Kudos [?]: 145 [0], given: 16

Senior Manager
Status: D-Day is on February 10th. and I am not stressed
Affiliations: American Management association, American Association of financial accountants
Joined: 12 Apr 2011
Posts: 251

Kudos [?]: 376 [0], given: 52

Location: Kuwait
Schools: Columbia university
Re: A survey of a group of people between the ages of 75 and 80 [#permalink]

### Show Tags

17 Nov 2011, 13:35
I choose D...
_________________

Sky is the limit

Kudos [?]: 376 [0], given: 52

BSchool Forum Moderator
Status: Flying over the cloud!
Joined: 16 Aug 2011
Posts: 889

Kudos [?]: 741 [0], given: 44

Location: Viet Nam
GMAT Date: 06-06-2014
GPA: 3.07
Re: A survey of a group of people between the ages of 75 and 80 [#permalink]

### Show Tags

18 Nov 2011, 01:52
OA is D
_________________

Rules for posting in verbal gmat forum, read it before posting anything in verbal forum
Giving me + 1 kudos if my post is valuable with you

The more you like my post, the more you share to other's need

CR: Focus of the Week: Must be True Question

Kudos [?]: 741 [0], given: 44

Director
Joined: 28 Jul 2011
Posts: 516

Kudos [?]: 312 [0], given: 16

Location: United States
GPA: 3.86
WE: Accounting (Commercial Banking)
Re: A survey of a group of people between the ages of 75 and 80 [#permalink]

### Show Tags

18 Nov 2011, 04:54
I will go with D

_________________

Kudos [?]: 312 [0], given: 16

Re: A survey of a group of people between the ages of 75 and 80   [#permalink] 18 Nov 2011, 04:54
Display posts from previous: Sort by

# A survey of a group of people between the ages of 75 and 80

Moderators: GMATNinjaTwo, GMATNinja

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.