Find all School-related info fast with the new School-Specific MBA Forum

It is currently 21 Oct 2014, 04:05

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Psychologists conducted a series of experiments to test the

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
1 KUDOS received
SVP
SVP
avatar
Joined: 16 Jul 2009
Posts: 1634
Schools: CBS
WE 1: 4 years (Consulting)
Followers: 31

Kudos [?]: 278 [1] , given: 2

Psychologists conducted a series of experiments to test the [#permalink] New post 19 Aug 2009, 12:57
1
This post received
KUDOS
1
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

73% (02:19) correct 27% (01:41) wrong based on 50 sessions
Psychologists conducted a series of experiments to test the effect upon schoolchildren of violence in films. In the first experiment, grammar school children were shown a film that included scenes of a male teenager engaging in violent acts against others, such as punching, pushing, and kicking. During a free-play session following the film viewing, 42 percent of the children were observed to engage in one or more violent acts similar to those in the film. In a second experiment, a different group of children was shown a similar film featuring a female teenager. Only 14 percent of the children were observed behaving violently afterward. The psychologists concluded that children are more likely to imitate violent behavior on film when a male model is shown than when a female model is shown.
Which of the following, if true, would most seriously weaken the psychologists’ conclusion?
(A) In both experiments, the victims of the filmed violence included both males and females.
(B) In the second experiment, 28 percent of the children appeared upset during the viewing the violent film scenes.
(C) The first group included 19 male students and 20 female students; the second group included 20 male students and 21 female students.
(D) In the first group, 58 percent of the children appeared bored during the showing of the film, and 12 percent fell asleep.
(E) The percentage of children known to have discipline problems prior to the experiment was greater in the first group than in the second group.
[Reveal] Spoiler: OA

_________________

The sky is the limit
800 is the limit


Get the best GMAT Prep Resources with GMAT Club Premium Membership


Last edited by ankurgupta03 on 13 Apr 2014, 02:59, edited 1 time in total.
added the OA
Intern
Intern
avatar
Joined: 22 Jun 2009
Posts: 3
Followers: 0

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

Re: Psychologists conducted [#permalink] New post 19 Aug 2009, 19:18
IMO (E)
Manager
Manager
avatar
Joined: 26 Aug 2005
Posts: 60
Followers: 1

Kudos [?]: 4 [0], given: 0

Re: Psychologists conducted [#permalink] New post 19 Aug 2009, 22:16
another vote for (e) by POE
Senior Manager
Senior Manager
avatar
Joined: 26 May 2009
Posts: 317
Followers: 2

Kudos [?]: 35 [0], given: 13

Re: Psychologists conducted [#permalink] New post 19 Aug 2009, 22:46
+1 for E
1 KUDOS received
Senior Manager
Senior Manager
avatar
Joined: 29 Jul 2009
Posts: 316
Followers: 4

Kudos [?]: 204 [1] , given: 9

Re: Psychologists conducted [#permalink] New post 19 Aug 2009, 23:30
1
This post received
KUDOS
one more vote for E. Here's my line of reasoning.

This stimulus falls into a common reasoning pattern in which the author concludes that because two groups of people, one that is supplied with a product whereas the other is not, present differences between them. The author attributes this differences to the product but does not consider that the differences might have already been there before the supply.

As a analogy consider a product that claims to make people loose weight. Consider two groups of people. People in group 1 weight less than people in group 2. People in group 1 take the product for 6 weeks after of which they weight less than people in group 2. The study concludes that the product caused that lost in weight. This is clearly flawed.

Regarding the stimulus

A) In both experiments, the victims of the filmed violence included both males and females.
This answer address the victims of the filmed that is not discussed in the stimulus. out
B) In the second experiment, 28 percent of the children appeared upset during the viewing the violent film scenes.
For this to weaken the argument you have to assume that when people view a film while they are upset the film does not influence them. Since we cannot make that assumption, we can rule B out.

(C) The first group included 19 male students and 20 female students; the second group included 20 male students and 21 female students.
The stimulus talks about percentages so raw numbers are useless
D) In the first group, 58 percent of the children appeared bored during the showing of the film, and 12 percent fell asleep.
That the children did not like the film does not weaken that the film influenced them.
(E) The percentage of children known to have discipline problems prior to the experiment was greater in the first group than in the second group.
This states that the groups were different prior to the experiment. Correct
Senior Manager
Senior Manager
User avatar
Joined: 26 Jul 2009
Posts: 359
Followers: 2

Kudos [?]: 29 [0], given: 32

Re: Psychologists conducted [#permalink] New post 20 Aug 2009, 00:34
E.

Weakens the explanation [male vs female] by offering another explanation [1st group vs 2nd group] for the difference.
Senior Manager
Senior Manager
User avatar
Joined: 21 Jul 2009
Posts: 266
Location: New York, NY
Followers: 1

Kudos [?]: 40 [0], given: 23

Re: Psychologists conducted [#permalink] New post 28 Aug 2009, 13:03
E

The expriment was not good because the two groups were not alike.

Posted from my mobile device Image
Manager
Manager
avatar
Joined: 07 Jul 2009
Posts: 230
Followers: 3

Kudos [?]: 43 [0], given: 13

Re: Psychologists conducted [#permalink] New post 28 Aug 2009, 13:18
Straight E. If we have a biased group, then reasoning doesn't stand a chance.
Manager
Manager
avatar
Joined: 28 Aug 2009
Posts: 196
Followers: 2

Kudos [?]: 49 [0], given: 1

Re: Psychologists conducted [#permalink] New post 05 Sep 2009, 15:36
mikeCoolBoy wrote:
one more vote for E. Here's my line of reasoning.

This stimulus falls into a common reasoning pattern in which the author concludes that because two groups of people, one that is supplied with a product whereas the other is not, present differences between them. The author attributes this differences to the product but does not consider that the differences might have already been there before the supply.

As a analogy consider a product that claims to make people loose weight. Consider two groups of people. People in group 1 weight less than people in group 2. People in group 1 take the product for 6 weeks after of which they weight less than people in group 2. The study concludes that the product caused that lost in weight. This is clearly flawed.

Regarding the stimulus

A) In both experiments, the victims of the filmed violence included both males and females.
This answer address the victims of the filmed that is not discussed in the stimulus. out
B) In the second experiment, 28 percent of the children appeared upset during the viewing the violent film scenes.
For this to weaken the argument you have to assume that when people view a film while they are upset the film does not influence them. Since we cannot make that assumption, we can rule B out.

(C) The first group included 19 male students and 20 female students; the second group included 20 male students and 21 female students.
The stimulus talks about percentages so raw numbers are useless
D) In the first group, 58 percent of the children appeared bored during the showing of the film, and 12 percent fell asleep.
That the children did not like the film does not weaken that the film influenced them.
(E) The percentage of children known to have discipline problems prior to the experiment was greater in the first group than in the second group.
This states that the groups were different prior to the experiment. Correct

good explanations
Senior Manager
Senior Manager
avatar
Joined: 29 Jul 2009
Posts: 316
Followers: 4

Kudos [?]: 204 [0], given: 9

Re: Psychologists conducted [#permalink] New post 05 Sep 2009, 18:44
Thank you, I always try to do my best. That people sometimes like my explanations encourages me to keep posting.
SVP
SVP
avatar
Joined: 16 Jul 2009
Posts: 1634
Schools: CBS
WE 1: 4 years (Consulting)
Followers: 31

Kudos [?]: 278 [0], given: 2

Re: Psychologists conducted [#permalink] New post 09 Sep 2009, 13:08
The point is that E implies that the 2 groups are different so the conclusion can not be made or that the discipline problems of the first groups also imply more violence among that group so is logical to conclude that group to be more violent?
_________________

The sky is the limit
800 is the limit


Get the best GMAT Prep Resources with GMAT Club Premium Membership

Senior Manager
Senior Manager
avatar
Joined: 17 Jul 2009
Posts: 300
Concentration: Nonprofit, Strategy
GPA: 3.42
WE: Engineering (Computer Hardware)
Followers: 1

Kudos [?]: 32 [0], given: 9

Re: Psychologists conducted [#permalink] New post 09 Sep 2009, 16:47
i think it implies the two groups are different and that is enough...because you cant use two different groups to argue the same thing...well to say the first group has more discipline problems also suggest they might have a higher chance of behaving violently...
SVP
SVP
avatar
Joined: 16 Jul 2009
Posts: 1634
Schools: CBS
WE 1: 4 years (Consulting)
Followers: 31

Kudos [?]: 278 [0], given: 2

Re: Psychologists conducted [#permalink] New post 10 Sep 2009, 10:16
sprtng wrote:
i think it implies the two groups are different and that is enough...because you cant use two different groups to argue the same thing...well to say the first group has more discipline problems also suggest they might have a higher chance of behaving violently...


discipline problems-->more violence, for me is assuming to much
_________________

The sky is the limit
800 is the limit


Get the best GMAT Prep Resources with GMAT Club Premium Membership

Senior Manager
Senior Manager
avatar
Joined: 17 Jul 2009
Posts: 300
Concentration: Nonprofit, Strategy
GPA: 3.42
WE: Engineering (Computer Hardware)
Followers: 1

Kudos [?]: 32 [0], given: 9

Re: Psychologists conducted [#permalink] New post 10 Sep 2009, 10:46
noboru wrote:
sprtng wrote:
i think it implies the two groups are different and that is enough...because you cant use two different groups to argue the same thing...well to say the first group has more discipline problems also suggest they might have a higher chance of behaving violently...


discipline problems-->more violence, for me is assuming to much


what it's implying here is that these are two different groups. of course the reaction might be different.
Manager
Manager
avatar
Joined: 08 Oct 2010
Posts: 213
Location: Uzbekistan
Schools: Johnson, Fuqua, Simon, Mendoza
WE 3: 10
Followers: 9

Kudos [?]: 220 [0], given: 974

Re: Psychologists conducted [#permalink] New post 15 Dec 2010, 04:58
the initial contents of both groups were not equal, i.e. the first group has had health problems which does effect results of the expetiment.
Hence: E
Senior Manager
Senior Manager
User avatar
Status: Bring the Rain
Joined: 17 Aug 2010
Posts: 408
Location: United States (MD)
Concentration: Strategy, Marketing
Schools: Michigan (Ross) - Class of 2014
GMAT 1: 730 Q49 V39
GPA: 3.13
WE: Corporate Finance (Aerospace and Defense)
Followers: 7

Kudos [?]: 43 [0], given: 46

Re: Psychologists conducted [#permalink] New post 15 Dec 2010, 07:13
Director
Director
avatar
Joined: 03 Aug 2012
Posts: 914
Concentration: General Management, General Management
GMAT 1: 630 Q47 V29
GMAT 2: 680 Q50 V32
GPA: 3.7
Followers: 13

Kudos [?]: 239 [0], given: 318

Premium Member CAT Tests
Re: Psychologists conducted a series of experiments to test the [#permalink] New post 12 Apr 2014, 03:57
Causal conclusion always weak.

Conclusion assumes that the data presented is true and thus concludes that

that children are more likely to imitate violent behavior on film when a male model is shown than when a female model is shown.

However, if we give some other premise stating that the data is an outcome of some other cause then that will weaken the conclusion.

Hence (E) gives the alternate cause of the data presented and the cause is not film viewing.
_________________

Rgds,
TGC!
_____________________________________________________________________
I Assisted You => KUDOS Please
_____________________________________________________________________________

Current Student
avatar
Joined: 03 May 2013
Posts: 326
Location: India
Concentration: Operations, Human Resources
Schools: ISB '16, IIMA (M)
GPA: 4
WE: Human Resources (Human Resources)
Followers: 0

Kudos [?]: 50 [0], given: 47

Re: Psychologists conducted [#permalink] New post 12 Apr 2014, 20:50
mikeCoolBoy wrote:
one more vote for E. Here's my line of reasoning.

This stimulus falls into a common reasoning pattern in which the author concludes that because two groups of people, one that is supplied with a product whereas the other is not, present differences between them. The author attributes this differences to the product but does not consider that the differences might have already been there before the supply.

As a analogy consider a product that claims to make people loose weight. Consider two groups of people. People in group 1 weight less than people in group 2. People in group 1 take the product for 6 weeks after of which they weight less than people in group 2. The study concludes that the product caused that lost in weight. This is clearly flawed.

Regarding the stimulus

A) In both experiments, the victims of the filmed violence included both males and females.
This answer address the victims of the filmed that is not discussed in the stimulus. out
B) In the second experiment, 28 percent of the children appeared upset during the viewing the violent film scenes.
For this to weaken the argument you have to assume that when people view a film while they are upset the film does not influence them. Since we cannot make that assumption, we can rule B out.
(C) The first group included 19 male students and 20 female students; the second group included 20 male students and 21 female students.
The stimulus talks about percentages so raw numbers are useless
D) In the first group, 58 percent of the children appeared bored during the showing of the film, and 12 percent fell asleep.
That the children did not like the film does not weaken that the film influenced them.
(E) The percentage of children known to have discipline problems prior to the experiment was greater in the first group than in the second group.
This states that the groups were different prior to the experiment. Correct


MY QUESTION FOR MIKE COOL BOY- ISNT 'A' BETTER AS AN ANSWER THAN 'E'-

conclusion says- The psychologists concluded that children are more likely to imitate violent behavior on film when a male model is shown than when a female model is shown

A) In both experiments, the victims of the filmed violence included both males and females. WEAKEN QUESTION CAN HAVE OUTSIDE INFO. BOTH EXPERIMENTS HAD VIOLENCE IN WHICH BOTH MALES AND FEMALES WERE VICTIMS. YET BOTH GROUPS BEHAVED DIFFERENTLY. THE REASON COULD' NT HAVE BEEN PRESENCE OF FEMALE AS THEY WERE PRESENT IN BOTH AND SUBJECTED TO VIOLENCE TOO. HENCE WEAKENS CONCLUSION WHICH SAYS----The psychologists concluded that children are more likely to imitate violent behavior on film when a male model is shown than when a female model is shown.

(E) The percentage of children known to have discipline problems prior to the experiment was greater in the first group than in the second group. THE CHILDREN OF FIRST GROUP WERE MORE INDISCILPLINED( MAYBE JUST 1% MORE)- NOT VIOLENT. SHELL GAME. INDISCIPLINED DOESNT MEAN VIOLENT. BUT THE STATISTICS OF THE RESULT WERE STARCKINGLY DIFFERENT. IT DOESNT WEAKEN THE CONCLUSION THAT VIOLENCE IN THE MOVIE CAUSED THEIR BEHAVIOUR , AS THEY DID., AFTER THE EXPERIMENT.

COMMENTS PLEASE. THANKS......
Manager
Manager
User avatar
Joined: 24 Oct 2013
Posts: 163
Location: Canada
GMAT 1: Q49 V38
WE: Design (Transportation)
Followers: 4

Kudos [?]: 3 [0], given: 81

GMAT ToolKit User Premium Member CAT Tests
Re: Psychologists conducted [#permalink] New post 12 Apr 2014, 21:13
semwal wrote:
MY QUESTION FOR MIKE COOL BOY- ISNT 'A' BETTER AS AN ANSWER THAN 'E'-

A) In both experiments, the victims of the filmed violence included both males and females. WEAKEN QUESTION CAN HAVE OUTSIDE INFO. BOTH EXPERIMENTS HAD VIOLENCE IN WHICH BOTH MALES AND FEMALES WERE VICTIMS. YET BOTH GROUPS BEHAVED DIFFERENTLY. THE REASON COULD' NT HAVE BEEN PRESENCE OF FEMALE AS THEY WERE PRESENT IN BOTH AND SUBJECTED TO VIOLENCE TOO. HENCE WEAKENS CONCLUSION.

(E) The percentage of children known to have discipline problems prior to the experiment was greater in the first group than in the second group. THE CHILDREN OF FIRST GROUP WERE MORE INDISCILPLINED( MAYBE JUST 1% MORE)- NOT VIOLENT. SHELL GAME. INDISCIPLINED DOESNT MEAN VIOLENT. BUT THE STATISTICS OF THE RESULT WERE STARCKINGLY DIFFERENT. IT DOESNT WEAKEN THE CONCLUSION THAT VIOLENCE IN THE MOVIE CAUSED THEIR BEHAVIOUR , AS THEY DID., AFTER THE EXPERIMENT.

COMMENTS PLEASE. THANKS......


Just saying males and females present doesn't necessarily mean they're present in equal number.

WHAT IF GROUP A HAD 1 FEMALE AND 100 MALES, AND GROUP B HAD 100 FEMALES AND 1 MALE?

Doesn't this ratio kinda strengthen the argument?

Another point, 'THE REASON COULD' NT HAVE BEEN PRESENCE OF FEMALE AS THEY WERE PRESENT IN BOTH AND SUBJECTED TO VIOLENCE TOO' -- it's nowhere mentioned that females were the subject of violence. the subjects have not been mentioned.

now it's mentioned that 'violent acts against others, such as punching, pushing, and kicking' and the indiscipline problems associated with children are generally the ones mentioned.

Now A says 'In both experiments, the victims of the filmed violence included both males and females.'

Which essentially means that 'hey if you thought that only males were present in the groups then wait! lemme tell you that In both experiments, the victims of the filmed violence included both males and females'

This is like trying to strengthen the argument by saying that both were present there so there's gotta be some other reason that males and females being present.
Current Student
avatar
Joined: 03 May 2013
Posts: 326
Location: India
Concentration: Operations, Human Resources
Schools: ISB '16, IIMA (M)
GPA: 4
WE: Human Resources (Human Resources)
Followers: 0

Kudos [?]: 50 [0], given: 47

Re: Psychologists conducted [#permalink] New post 13 Apr 2014, 00:37
gauravkaushik8591 wrote:
semwal wrote:
MY QUESTION FOR MIKE COOL BOY- ISNT 'A' BETTER AS AN ANSWER THAN 'E'-

A) In both experiments, the victims of the filmed violence included both males and females. WEAKEN QUESTION CAN HAVE OUTSIDE INFO. BOTH EXPERIMENTS HAD VIOLENCE IN WHICH BOTH MALES AND FEMALES WERE VICTIMS. YET BOTH GROUPS BEHAVED DIFFERENTLY. THE REASON COULD' NT HAVE BEEN PRESENCE OF FEMALE AS THEY WERE PRESENT IN BOTH AND SUBJECTED TO VIOLENCE TOO. HENCE WEAKENS CONCLUSION.

(E) The percentage of children known to have discipline problems prior to the experiment was greater in the first group than in the second group. THE CHILDREN OF FIRST GROUP WERE MORE INDISCILPLINED( MAYBE JUST 1% MORE)- NOT VIOLENT. SHELL GAME. INDISCIPLINED DOESNT MEAN VIOLENT. BUT THE STATISTICS OF THE RESULT WERE STARCKINGLY DIFFERENT. IT DOESNT WEAKEN THE CONCLUSION THAT VIOLENCE IN THE MOVIE CAUSED THEIR BEHAVIOUR , AS THEY DID., AFTER THE EXPERIMENT.

COMMENTS PLEASE. THANKS......


Just saying males and females present doesn't necessarily mean they're present in equal number.

WHAT IF GROUP A HAD 1 FEMALE AND 100 MALES, AND GROUP B HAD 100 FEMALES AND 1 MALE?

Doesn't this ratio kinda strengthen the argument?

Another point, 'THE REASON COULD' NT HAVE BEEN PRESENCE OF FEMALE AS THEY WERE PRESENT IN BOTH AND SUBJECTED TO VIOLENCE TOO' -- it's nowhere mentioned that females were the subject of violence. the subjects have not been mentioned.

now it's mentioned that 'violent acts against others, such as punching, pushing, and kicking' and the indiscipline problems associated with children are generally the ones mentioned.

Now A says 'In both experiments, the victims of the filmed violence included both males and females.'

Which essentially means that 'hey if you thought that only males were present in the groups then wait! lemme tell you that In both experiments, the victims of the filmed violence included both males and females'

This is like trying to strengthen the argument by saying that both were present there so there's gotta be some other reason that males and females being present.


I COULD'NT GET YOUR LOGIC.....
ratio of male to female doesnt matter TILL BOTH MALE AND FEMALE ARE PRESENT. YES, YOU COULD SAY THAT SINCE THE STIMULUS GIVES "similar film featuring a female teenager", IN THE SECOND FILM A FEMALE TEENAGER WAS INVOLVED IN VIOLENCE. SO VIOLENCE WAS COMMON TO BOTH FILMS- HOWEVER THE accused either a male or female. and this difference in MODEL SEX led to the difference. IF THAT BE SO, THAN ONLY "E" COULD BE THE CORRECT ANSWER....BRINGING OUT DIFFERENCE IN THE TWO SAMPLES.
Re: Psychologists conducted   [#permalink] 13 Apr 2014, 00:37
    Similar topics Author Replies Last post
Similar
Topics:
In an experiment conducted by two psychologists from the Uni prashantpareek 5 22 May 2014, 10:07
1 The Mach Test, developed by psychologists to determine the shrive555 7 20 Oct 2010, 18:55
6 Experts publish their posts in the topic When a random experiment is conducted, the probability that hemanthp 6 26 Sep 2010, 08:38
2 Experts publish their posts in the topic When a random experiment is conducted, the probability that mojorising800 5 29 Jan 2010, 10:26
Psychologists conducted a series of experiments to test the ywilfred 7 05 Sep 2005, 07:39
Display posts from previous: Sort by

Psychologists conducted a series of experiments to test the

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

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®.