Weaken Flashcards
Most important strategy TO MAINTAIN ACCURACY in weaken QUESTIONS
In order to maximize your
chances of success you must identify, isolate, and assess the premises
and the conclusion of the argument.
Only by understanding the structure of the argument can you gain the perspective necessary to attack the author’s position.
Ensure you have properly mapped out the Conclusion first
MAKE SURE YOU MAKE LOGICAL CONNECTIONS AND CONNECT ALL FACTS TO THE CONCLUSION USING DIAGRAMING
Always prethink the assumptions and determine the one that is most critical to the conclusion.
WHAT YOU WANT TO WEAKEN IS THE LOGICAL LINK (& core Assumption) TO THE CONCLUSION. if an answer choice is talking about something not in the logical chain-assumption-conclusion you mapped out, its irrelevant
To weaken a conditional conclusion ………
attack the necessary condition by showing that the necessary condition does not need to occur in order for the sufficient condition to occur.
This can be achieved by presenting a counterexample or by presenting
information that shows that the sufficient condition can occur without the necessary condition.
When you have conditional reasoning in the stimulus and a Weaken question, immediately look for an answer that attacks the necessary condition.
T/F?
Weaken is the most common type of CR question
True
T/F?
A correct answer that weakens argument can bring in new information
TRUE
Remember: weaken is part of the “hurt” family where each option choice is taken as fact, and is meant to highlight a gap in the logic of the passage.
The point is to determine - does this new info affect the argument logically?
T/F?
Correct answer to weaken the argument has to dispove the conclusion
FALSE
Most correct answers will not advertly “disprove” the argument, instead they will “cast doub or “decrease the pursuessiveness” of the argument
T/F?
A correct “weaken” answer can attack premise
False
Any answer that attacks the premise can NEVER be correct. Premise is considered as FACT.
The Correct answer to a weaken question …
- Attacks the Assumption, a glue that logically links the premise to the conclusion, even though the premise is true
- May not explitly say the assumption is false. Intead, it will “subtly” cast reasonable doubt on the validity of the assumption (logical link) → casting doubt on the conclusion/argment no matter how small.
the correct answer may be subtle but weakens
What are the “weaken” indicators in question stem?
Which of the following , if true…. (indicates hurt/help), followed by certain key words;
weaken
attack
undermine
refute
argue against
call into question
cast doubt
challenge
damage
counter
evidence against
indicates a vunerability
7 Types of “Correct answers” to “weaken” questions
- Exposes a false dichotomy by offering a 3rd alternative
- Calls into question a cause-effect conclusion
- Shows that a generalization that supports an argument is faulty
- Shows that a comparison used to support the conclusion is faulty
- Shows that, in arriving at a conclusion, the author confused numbers and percentages.
- Brings up new info that suggest that a plan will not work, when the conclusion says it will.
- Indicates that a plan, which the argument concludes will not work, will actually work.
Situation:
An argument incorrectly limits the number of possible conclusions/alternatives to 2.
It implies that just because one outcome is impossible, the other must be true.
How can this argument be weakened?
We weaken → By showing that there is an alternative posibility/explanation that the author has failed to consider
Assumption - There is no alternative path to an outcome occuring
Weakener- There is an alternative path to the outcome occuring
Situation:
An argument presents facts that events A and B occured silmutenously/sequentialy or that there is a correlation between them. It concludes that A must have caused B.
How can this argument be weakened?
We weaken → By providing alternative explanations for the events by bringing new info that imply;
- A causal relationship exists but its the reverse ie B →A
- No causal relationship exist between A & B, instead a 3rd factor Z → A & B
- The correlation is just a mere coincidence, and no causal relationship exists.
Assumption - the cause-effect claim is correct and there is no alternate explanation for the observed events.
Weakener- There is an alternative explanation for the observed events, and the claim may be incorrect
Situation:
An argument presents facts that some members (at least one) of a group has certain characteristics , and implies that therefore all members of the group must have the same characteristic as well.
How can this argument be weakened?
We weaken →
* By providing info that implies that because some members of a group have a characteristic does not mean that all members of that group have that characteristic.
* By rendering the sample as “bi not representative of the overall population. Basicly it implies that the author is making faulty generalizations
Assumption - the small sample provides solid support for the conclusion on the overall population/group
Weakener- the sample is not representative of the overall population, and it is not the case in all members of a group/population/scenario.
Situation:
An argument makes a comparison about 2 things that are fundamentally different . It uses this comparison to support its conclusion.
How can this argument be weakened?
We weaken → By indicatig that items in the comparison are different in key ways, the comparison may be faulty enough to not support the the conclusion.
Hint: when an argument is based on a comparison, the correct answer choice will most likely be about the comparison
Assumption - the comparison is logically correct and provides solid support for the conclusion
Weakener- the items being compared are different in key ways, so the comparison may be logically incorrect and not a solid support for the argument.
Situation:
An argument provides statistical data (e.g. numbers and percentages) and makes a conclusion based on this.
How can this argument be weakened?
We weaken → by implying that data was not properly analyzed or not sufficient to support the conclusion.
if % are used, it will suggest that the % are misleading.
Assumption - the data is properly analyzed, and provides solid support for the argument.
Weakener- the data is misleading and not what it seems, and may not be enough support for the conclusion.
Situation:
An argument presents a plan/course of action that should generate a desired/expected result
How can this argument be weakened?
We weaken → By bringing info that indicates that the plan may not work, or that taking the course of action will not generate the desired result.
The correct answers fall into the following categories;
- The plan addresses one factor in the situation, the ans indicates there is another factor that the plan does not address
- The ans indicates that the method the plan wants to use to solve a problem will make the problem worse in another way
- if the argument concludes that a plan will work because a similar plan has worked before, the ans will show that the plan will not work because the current situation is different form the situation existing when the plan was prev used
- The ans shows that the logic underlying the expectation that the plan will work misses a key aspect of how the situation works.
Assumption - the plan will work, and there is no malicious/unsuspected variable that will make the plan not to work.
Weakener- the plan will not work,