CHALLENGE: Identify the Flaws

These questions ask you to recognize what’s wrong with an argument. Most of these questions require you to point out a fallacy in the argument.

Here are typical flaw questions:

  • Which one of the following best identifies the flaw in the above argument?
  • In presenting her position, the author does which one of the following?

Intro (0:01) | Ex.1 (3:44) | Ex.2 (11:02) | Ex.3 (16:18) | Trap Choices (21:16)
Register for a free demo class and a free LSAT from LSATLab.

How to beat Flaw Questions:

  1. Identify and put the conclusion and premises in your own words.
  2. Keep an eye out for extreme statements (which are harder to defend or prove).
  3. Find assumptions
  4. Based on the assumptions, you can identify the main flaw. Become very good at identifying logical flaws in the assumptions (see our list below).
  5. Find the answer that most resembles your idea of the flaw (check all choices).

Logical Fallacies

Any assumption is, by definition, a fallacy. Assumptions tend to fall into specific classes and we’ve identified over two dozen types of flaws in this course. Many LSAT questions revolve around identifying assumptions (flaws) in arguments. One way to learn how to find these errors and teach your mind to think critically is to go through a series of common flaws. Many of these flaws are rarely found on the LSAT. However, the ability to read critically and evaluate for any and all fallacies and assumption-types will still prove to be a crucial skill in your daily life.

Next LSAT: Jun 10/Jun 11

Video Quiz

Assumption Flaw Questions

Best viewed in landscape mode

1 question with a video explanation

100 seconds per question

Continue to Question (1)

Time Expired

Replay Video

Replay Video

Are you sure you want to refresh the question?


Choose the correct answer.

Press SELECT to start video.

Be sure to turn on your volume to hear the explanation.

We’re going to delve into the different kinds of flaws, starting with the Ad Hominem category.

Register for free online LSAT classes. Over six free online LSAT seminars available this week.

Next LSAT: Jun 10/Jun 11