In the Inferences chapter, you learned basic formal deductive logic, e.g. If A = B and B = C, then A = C. Now we are moving to analyzing inductive reasoning (where it isn’t so clear cut). Identify the Argument questions will involve highly complex premise and conclusion structures.

CHALLENGE: Identify an Argument’s Structure

Describe the Argument questions are identifiable by their distinct questions stems:

  • The argument proceeds by…
  • The advertiser employs which of the following argumentative strategies?
  • Which of the following is a technique of reasoning used in the argument?
  • Which one of the following is an argumentative strategy employed in the argument?
  • Marco responds to Gaston by… (These questions feature contradictory arguments from two different people).

How to solve

  1. Identify the premises and the conclusion and how they relate to each other.
  2. Avoid trap choices:
    a) Avoid answer choices that are generic argumentative techniques, but not relevant to the question.
    b) Other trap answer choices may describe part of the argument correctly and the other part incorrectly.
  3. Try to get a handle on logical reasoning terminology (deductive reasoning, inductive reasoning, premises, and conclusions) because they’ll be in the answer choices. We wouldn’t burden our dear students with such heavy and intimidating terms if it weren’t absolutely necessary to know these terms down for test day.
  4. It helps to diagram these questions so that you can visualize the argument structure. You can look for keywords that signal premises and conclusions (but don’t over-rely on them).
  5. Like the prior lesson, Conclusions, we’re not terribly concerned with logical flaws in the argument, just describing the argument.

Next LSAT: January 26

Common Argument Styles

On these Describe an Argument questions the focus is not on the validity of the argument. Rather, you’re trying to find the premises and the conclusion. So, you’re not worrying much about false assumptions. Here are common arguments made in these questions:

1. Make an analogy
2. Ignore or focus upon possible causes
3. Use an example or counterexample
4. Use reasoning to draw an absurd example (argument ad absurdum).
5. Undermine a premise or a conclusion
6. Appeal to a general principle or authority

Argument Keyword Indicators

Learning to skim the passage to detect keywords is a vital skill.

Premise

  • Because
  • Since
  • Due to
  • For instance
  • For example
  • Given that
  • Clear/Evidenced from the fact that
  • Supported by the fact that
  • In that
  • Can be seen from
  • For the reason that
  • In as much as
  • Derived from
  • After all
  • Above all
  • Indeed
  • Seeing that

Secondary Premise

  • And
  • At the same time
  • In addition
  • Moreover
  • Furthermore
  • Also
  • What’s more
  • Besides
  • Additionally

Counter-Premise/Arguments

  • But
  • Yet
  • In contrast
  • However
  • Nevertheless
  • Nonetheless
  • On the other hand
  • Though
  • Even though
  • Although
  • While
  • Despite
  • In spite of
  • Admittedly
  • Granted
  • Of course
  • May be right
  • Is true that
  • Unlike
  • Whereas

Conclusion

  • Therefore
  • Conclude that
  • Can be concluded that
  • Accordingly
  • Thus
  • Consequently
  • Clearly/Obviously
  • Strongly supports that
  • Hence
  • So
  • For this reason
  • In view of this
  • As a result
  • Clear that
  • Can infer that
  • Follows that
  • Shows that
  • Implies that
  • Seems that
  • Means that
  • Must be that
  • Should be noted that

Questions

Identify an Argument questions are looking to identify the organization of the premises and the conclusion.

Next LSAT: January 26