Chapter 2: The Basics of Logical Reasoning Flashcards
Prepare for the LSAT
What is a premise?
A fact, proposition, or statement from which a conclusion is made (premises support and explain the conclusion)
What is a conclusion?
A statement or judgement that follows from one or more reasons (drawn from and rest on the premises)
Premise or Conclusion indicator: Because
Premise indicator (appears the most)
Premise or Conclusion indicator: Since
Premise indicator (appears the most)
Premise or Conclusion indicator: For
Premise indicator (appears the most)
Premise or Conclusion indicator: For example
Premise indicator
Premise or Conclusion indicator: For the reason that
Premise indicator
Premise or Conclusion indicator: In that
Premise indicator
Premise or Conclusion indicator: Given that
Premise indicator
Premise or Conclusion indicator: As indicated by
Premise indicator
Premise or Conclusion indicator: Due to
Premise indicator
Premise or Conclusion indicator: Owning to
Premise indicator
Premise or Conclusion Indicator: This can be seen from
Premise indicator
Premise or Conclusion indicator: We know this by
Premise indicator
Premise or Conclusion indicator: Thus
Conclusion indicator (appears the most)
Premise or Conclusion indicator: Therefore
Conclusion indicator (appears the most)
Premise or Conclusion indicator: Hence
Conclusion Indicator
Premise or Conclusion indicator: Consequently
Conclusion indicator
Premise or Conclusion indicator: As a result
Conclusion indicator
Premise or Conclusion indicator: So
Conclusion indicator
Premise or Conclusion indicator: Accordingly
Conclusion indicator
Premise or Conclusion indicator: Clearly
Conclusion indicator
Premise or Conclusion indicator: Must be that
Conclusion indicator
Premise or Conclusion indicator: Shows that
Conclusion indicator
Premise or Conclusion indicator: Conclude that
Conclusion indicator
Premise or Conclusion indicator: Follows that
Conclusion indicator
Premise or Conclusion indicator: For this reason
Conclusion indicator
Additional Premise
Another premise that supports the conclusion but is sometimes non-essential to the conclusion
(They may be central to the argument or secondary)
Additional Premise or Premise indicator: Furthermore
Additional Premise indicator
Additional Premise or Premise indicator: Moreover
Additional Premise indicator
Additional Premise or Premise indicator: Besides
Additional Premise indicator
Additional Premise or Premise indicator: In Addition
Additional Premise Indicator
Additional Premise or Premise Indicator: What’s more
Additional Premise indicator
Additional Premise or Premise indicator: After All
Additional Premise Indicator
Counter-Premises
Bring up points of opposition or comparison (not integral to the authors argument structure)
Additional Premise or Counter-Premise indicator: On the other hand
Counter-Premise indicator
Additional Premise or Counter-Premise indicator: Even though
Counter-Premise indicator
Additional Premise or Counter-Premise indicator: Although
Counter-Premise indicator
Additional Premise or Counter-Premise indicator: However
Counter-Premise Indicator
Additional Premise or Counter-Premise indicator: In contrast
Counter-Premise Indicator
Additional Premise or Counter-Premise indicator: Admittedly
Counter-Premise indicator
Additional Premise or Counter-Premise indicator: Yet
Counter-Premise indicator
Additional Premise or Counter-Premise indicator: But
Counter-Premise
Additional Premise or Counter-Premise indicator: Still
Counter-Premise Indicator
Additional Premise or Counter-Premise indicator: Whereas
Counter-Premise indicator
Additional Premise or Counter-Premise indicator: In spite of
Counter-Premise indicator
Additional Premise or Counter-Premise indicator: Despite
Counter-Premise indicator
Additional Premise or Counter-Premise indicator: After All
Counter-Premise indicator
(Can appear on multiple indicators lists because it can be used on a variety of ways, up to you to identify the exact role)
Conclusion Identification Method (used when no conclusion and premise indicators are present)
Take the statements under consideration for the conclusion and mentally place them in an arrangement that forces one to be a conclusion and the others to be premises. Use premise indicators to achieve this end. Arrange them to make logical sense and if not then reverse the arrangement until it makes sense
Complex arguments
Contain more than one conclusion. One of the conclusions is the main conclusion, and the other conclusions are subsidiary conclusions (also known as sub-conclusions)
At some point makes a conclusion based on a premise, and then the author then uses that “initial” conclusion as the foundation (or) premise for another conclusion.
Separate ideas in some manner. Natural stopping points, and help divide a sentence into smaller pieces
Comma ,
Typically precedes an explanation of the point prior to the colon, or introduces a list of some sort
Colon :
The ideas on either side of ___ are typically related but also could stand on their own as complete sentences. Stronger than a comma
Semi-Colon ;
The information in __ typically expands upon and adds additional information to the sentence
Parentheses ( )
___ are extremely versatile, and are often substituted for other punctuation marks, but the purpose is typically to set apart a particular idea
Dashes -
References words
Words that refer back or forward to ideas in the stimulus without explicitly naming the idea:
- This/That/These/Those
-It
-They/Their/Them
-One/Ones
-Former/Latter
Inference
-Something that must be true (finding an item that must be true based on the information presented in the argument)
-What follows from an argument (the conclusion)
Assumption
-What must be true in order for the argument to be true (same as an unstated premise)
-What is taken for granted while making an argument
Quality indicators
Refer to the amount or quantity in the relationship such as “some people” or “many of the laws”
Ex: All, every, most, many
Probability indicators
Refer to the likelihood of occurrence, or the obligation present, as in “the mayor should resign” or “the law will never pass”
Ex: Must, will, always, not always