Last visit was: 19 Nov 2025, 14:30 It is currently 19 Nov 2025, 14:30
Close
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
Your Progress

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
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Close
Request Expert Reply
Confirm Cancel
User avatar
carcass
User avatar
Board of Directors
Joined: 01 Sep 2010
Last visit: 17 Nov 2025
Posts: 4,754
Own Kudos:
37,015
 [6]
Given Kudos: 4,856
Posts: 4,754
Kudos: 37,015
 [6]
Kudos
Add Kudos
6
Bookmarks
Bookmark this Post
avatar
deep14
Joined: 21 Nov 2014
Last visit: 03 May 2019
Posts: 34
Own Kudos:
42
 [2]
Given Kudos: 16
Location: India
Schools: ISB '18
GMAT 1: 710 Q49 V38
GPA: 3.7
Schools: ISB '18
GMAT 1: 710 Q49 V38
Posts: 34
Kudos: 42
 [2]
1
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
User avatar
vijaisingh2001
Joined: 17 Aug 2015
Last visit: 16 May 2020
Posts: 55
Own Kudos:
103
 [2]
Given Kudos: 834
GMAT 1: 650 Q49 V29
Products:
GMAT 1: 650 Q49 V29
Posts: 55
Kudos: 103
 [2]
2
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
sobby
User avatar
Current Student
Joined: 14 Nov 2014
Last visit: 24 Jan 2022
Posts: 444
Own Kudos:
391
 [1]
Given Kudos: 54
Location: India
GMAT 1: 700 Q50 V34
GPA: 3.76
GMAT 1: 700 Q50 V34
Posts: 444
Kudos: 391
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
carcass

The Georgetown Public School recommends that all its students take an active interest in playing chess. This is because, according to a recent medical study, those students who played chess on an average performed better in tests of general intelligence than those who did not play chess. Thus the school contends that playing chess will boost up the intelligence of its students.

Which of the following raises the most serious doubt about the conclusion above?

(A) Some students who perform well in tests of general intelligence do not play chess
(B) Intelligent students are the only ones who take an interest in playing chess
(C) A similar correlation has not been observed with regards to other sports such as baseball
(D) Some of the students who play chess perform poorly in subjects such as History
(E) There can be other ways in which a student could develop intelligence

Its B ..... Student that are already intelligent play chess.So they performed better in test from others.
User avatar
pikolo2510
Joined: 05 Jul 2017
Last visit: 18 Jul 2021
Posts: 448
Own Kudos:
778
 [1]
Given Kudos: 294
Location: India
GMAT 1: 700 Q49 V36
GPA: 4
GMAT 1: 700 Q49 V36
Posts: 448
Kudos: 778
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Hello Experts,

Isn't A also weakening the conclusion?
If some students who performed well in tests of general intelligence do not play chess, then the school's decision to ask all students to play chess in order to boost the intelligence may not be successful

Please correct me if I am wrong
User avatar
Prashant10692
Joined: 21 Mar 2017
Last visit: 22 May 2018
Posts: 97
Own Kudos:
Given Kudos: 275
Location: India
GMAT 1: 560 Q48 V20
WE:Other (Computer Software)
Products:
GMAT 1: 560 Q48 V20
Posts: 97
Kudos: 144
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Choice B.

The cause and effect relationship is reversed.

Its not because of playing chess that the student are intelligent but because the they are intelligent, they play chess.
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 19 Nov 2025
Posts: 105,390
Own Kudos:
Given Kudos: 99,977
Products:
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 105,390
Kudos: 778,361
Kudos
Add Kudos
Bookmarks
Bookmark this Post
carcass
The Georgetown Public School recommends that all its students take an active interest in playing chess. This is because, according to a recent medical study, those students who played chess on an average performed better in tests of general intelligence than those who did not play chess. Thus the school contends that playing chess will boost up the intelligence of its students.

Which of the following raises the most serious doubt about the conclusion above?


(A) Some students who perform well in tests of general intelligence do not play chess

(B) Intelligent students are the only ones who take an interest in playing chess

(C) A similar correlation has not been observed with regards to other sports such as baseball

(D) Some of the students who play chess perform poorly in subjects such as History

(E) There can be other ways in which a student could develop intelligence



Official Explanation



Answer: B

This is a classic case of correlation being confused with causation. Just because those students who play chess perform better in tests of intelligence does not necessarily imply that it is because of chess that these students have become intelligent. It could very well be that since these students are intelligent, they like to play chess, that is, the causality could actually be the other way around. B points this out and is the correct answer.

(A) The argument does not contend that playing chess is the only way to boost intelligence. There could be other ways as well. All the argument contends is that if a student plays chess then he or she will definitely become intelligent.

(B) The correct answer.

(C) Other sports are outside the scope of the argument.

(D) The argument restricts itself to tests of intelligence; there is nothing in the argument to suggest that all intelligent students will perform well in all subjects.

(E) Other ways of developing intelligence are again outside the scope of the argument.
avatar
Meet95
Joined: 24 Apr 2021
Last visit: 17 Apr 2025
Posts: 23
Given Kudos: 22
Posts: 23
Kudos: 0
Kudos
Add Kudos
Bookmarks
Bookmark this Post
it is a reversed pattern question.
if you go with prethinking than you can easily select B
a.some students-irrelavnat
b. as mentoned earlier.correct answer
c. baseball-irrelavant'
d. history-irrelavant'
e- might ne but this doesnt weaken
Moderators:
GMAT Club Verbal Expert
7443 posts
GMAT Club Verbal Expert
231 posts
189 posts