LSAT Logical Reasoning

Spotting Logical Fallacies

Learn Spotting Logical Fallacies in LSAT Logical Reasoning from the production AIPH study guide.

Advanced Topics

In a nutshell: Learn to recognize the classic traps and errors in arguments.

## What are Logical Fallacies? Logical fallacies are errors in reasoning that undermine the logic of an argument. The LSAT loves to test your ability to spot these sneaky mistakes! ### Common Fallacies on the LSAT - **Causation vs. Correlation:** Just because two things happen together doesn’t mean one caused the other. - **Circular Reasoning:** The conclusion just repeats a premise. - **False Dilemma:** Pretending only two choices exist when there are more. #### How to Spot Them Watch for arguments that make leaps, ignore alternatives, or rely on shaky evidence. ### Why It Matters Being able to identify fallacies helps you avoid being misled in debates, advertisements, and news. #### Real-World Scenarios Whether you’re evaluating a political ad or an online review, spotting fallacies keeps your reasoning sharp.

Examples

  • A commercial says, 'People who drink this soda are happier. So, drinking this soda makes you happy.' (Causation vs. Correlation)
  • A politician says, 'We must ban this app or risk the collapse of society.' (False Dilemma)

Key terms

Fallacy
A flaw in reasoning that weakens an argument.
Correlation
A relationship between two variables, not necessarily causal.