Forum Home > GMAT > Quantitative > Problem Solving (PS)
Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Dec 1108:00 PM PST
-09:00 PM PST
Full-length FE mock with insightful analytics, weakness diagnosis, and video explanations!
Dec 1105:30 AM PST
-07:30 AM PST
Stuck at a score plateau and struggling to hit your target score? Watch this Masterclass by Strategy Expert - Piyush, to understand how you should turn around your preparation to reach your dream score in just 30 days.
Dec 1310:00 AM EST
-12:00 PM EST
Have you ever wondered how to score a PERFECT 805 on the GMAT? Meet Julia, a banking professional who used the Target Test Prep course to achieve this incredible feat. Julia's story is nothing short of an inspiration.
Dec 1405:30 AM PST
-07:30 AM PST
Did you know that around 66% of CR questions fall under a certain Framework? Learn how to Pre-think assumptions within 90 seconds using Guided Framework driven Pre- thinking in Causality, Plan-Goal, Comparison and more!
Dec 1410:00 AM EST
-12:00 PM EST
Think a 100% GMAT Verbal score is out of your reach? Target Test Prep will make you think again! Our course uses techniques such as topical study and spaced repetition to maximize knowledge retention and make studying simple and fun.
Dec 1411:00 AM IST
-01:00 PM IST
Attend this session to learn how to Deconstruct arguments, Pre-Think Author’s Assumptions, and apply Negation Test.- Dec 15
11:00 AM IST
-01:00 PM IST
Attend this free GMAT Algebra Webinar and learn how to master the most challenging Inequalities and Absolute Value problems with ease. 
Dec 1608:00 AM PST
-11:59 PM PST
GMAT Club 12 Days of Christmas is a 4th Annual GMAT Club Winter Competition based on solving questions. This is the Winter GMAT competition on GMAT Club with an amazing opportunity to win over $40,000 worth of prizes!
B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
95%
(hard)
Question Stats:
43% (02:21) correct
57%
(02:10)
wrong
based on 1133
sessions
History
Date
Time
Result
Not Attempted Yet
Zelda: Dr. Ladlow, a research psychologist, has convincingly demonstrated that his theory about the determinants of rat behaviour generates consistently accurate predictions about how rats will perform in a maze. On the basis of this evidence Dr. Ladlow has claimed that his theory is irrefutably correct.
Anson: Then Dr. Ladlow is not responsible psychologist. Dr. Ladlow‟s evidence does not conclusively prove that his theory is correct. Responsible psychologists always accept the possibility that new evidence will show that their theories are incorrect.
Which one of the following can be properly inferred from Anson's argument?
(A) Dr. Ladlow‟s evidence that his theory generates consistently accurate predictions about how rates will perform in a maze is inaccurate
(B) Psychologists who can derive consistently accurate predictions about how rats will perform in a maze from their theories cannot responsibly conclude that those theories cannot be disproved
(C) No matter how responsible psychologists are, they can never develop correct theoretical explanations.
(D) Responsible psychologists do not make predictions about how rats will perform in a maze
(E) Psychologists who accept the possibility that new evidence will show that their theories are incorrect are responsible psychologists.
Anson: Then Dr. Ladlow is not responsible psychologist. Dr. Ladlow‟s evidence does not conclusively prove that his theory is correct. Responsible psychologists always accept the possibility that new evidence will show that their theories are incorrect.
Which one of the following can be properly inferred from Anson's argument?
(A) Dr. Ladlow‟s evidence that his theory generates consistently accurate predictions about how rates will perform in a maze is inaccurate
(B) Psychologists who can derive consistently accurate predictions about how rats will perform in a maze from their theories cannot responsibly conclude that those theories cannot be disproved
(C) No matter how responsible psychologists are, they can never develop correct theoretical explanations.
(D) Responsible psychologists do not make predictions about how rats will perform in a maze
(E) Psychologists who accept the possibility that new evidence will show that their theories are incorrect are responsible psychologists.
12 Dec 2012, 16:01
Kudos
Bookmarks
Zelda: Dr. Ladlow, a research psychologist, has convincingly demonstrated that his theory about the determinants of rat behaviour generates consistently accurate predictions about how rats will perform in a maze. On the basis of this evidence Dr. Ladlow has claimed that his theory is irrefutably correct.
Anson: Then Dr. Ladlow is not responsible psychologist. Dr. Ladlow‟s evidence does not conclusively prove that his theory is correct. Responsible psychologists always accept the possibility that new evidence will show that their theories are incorrect.
Which one of the following can be properly inferred from Anson‟s argument?
(B) Psychologists who can derive consistently accurate predictions about how rats will perform in a maze from their theories cannot responsibly conclude that those theories cannot be disproved
(B) is essentially paraphrasing the paragraph, which says we know that all responsible scientists admit that their theories may be incorrect. A scientist who thinks otherwise, such as Dr. Ladlow, is not being responsible. Therefore, if you are studying rat behavior (a la Ladlow) you cannot responsibly conclude that your theory is irrefutable.
(E) Psychologists who accept the possibility that new evidence will show that their theories are incorrect are responsible psychologists.
(E) is definitely very tempting. But is it something that we could reasonably infer? Let's break down the structure of the argument: All responsible psychologists are ALWAYS accept that their theories may be incorrect. All X --->Y. (E), however, is saying All Y ---> X. This is not the same thing. Just because a psychologist accepts that their theories may be incorrect does not make that person responsible. Surely, there are other criteria. For instance, a responsible psychologist must also be ethical and organized. On the other hand, if we know a psychologist to be responsible (X), then he/she will definitely accept that their respective theory may be incorrect (Y).
Anson: Then Dr. Ladlow is not responsible psychologist. Dr. Ladlow‟s evidence does not conclusively prove that his theory is correct. Responsible psychologists always accept the possibility that new evidence will show that their theories are incorrect.
Which one of the following can be properly inferred from Anson‟s argument?
(B) Psychologists who can derive consistently accurate predictions about how rats will perform in a maze from their theories cannot responsibly conclude that those theories cannot be disproved
(B) is essentially paraphrasing the paragraph, which says we know that all responsible scientists admit that their theories may be incorrect. A scientist who thinks otherwise, such as Dr. Ladlow, is not being responsible. Therefore, if you are studying rat behavior (a la Ladlow) you cannot responsibly conclude that your theory is irrefutable.
(E) Psychologists who accept the possibility that new evidence will show that their theories are incorrect are responsible psychologists.
(E) is definitely very tempting. But is it something that we could reasonably infer? Let's break down the structure of the argument: All responsible psychologists are ALWAYS accept that their theories may be incorrect. All X --->Y. (E), however, is saying All Y ---> X. This is not the same thing. Just because a psychologist accepts that their theories may be incorrect does not make that person responsible. Surely, there are other criteria. For instance, a responsible psychologist must also be ethical and organized. On the other hand, if we know a psychologist to be responsible (X), then he/she will definitely accept that their respective theory may be incorrect (Y).
General Discussion
10 Dec 2012, 00:19
Kudos
Bookmarks
Most people should be able to narrow down to B and E.
B: This is close, but on examination is incorrect. Anson says that responsible psychologists always accept the possibility that new evidence will show that their theories are incorrect. However, this answer choice says that psychologists who can derive consistently accurate predictions about how rats will perform in a maze from their theories cannot responsibly conclude that those theories cannot be disproved. Therefore, it is possible that the psychologists can conclude that their theories cannot be disproved without new evidence being considered, but may be disproved in the face of new evidence. Insufficient.
E: This is the correct answer as it paraphrases Anson's response.
E it is.
B: This is close, but on examination is incorrect. Anson says that responsible psychologists always accept the possibility that new evidence will show that their theories are incorrect. However, this answer choice says that psychologists who can derive consistently accurate predictions about how rats will perform in a maze from their theories cannot responsibly conclude that those theories cannot be disproved. Therefore, it is possible that the psychologists can conclude that their theories cannot be disproved without new evidence being considered, but may be disproved in the face of new evidence. Insufficient.
E: This is the correct answer as it paraphrases Anson's response.
E it is.
