Fallacies — Know Them Cold for LR

Causal fallacies (most common on LSAT):

Post hoc: A happened before B, so A caused B

Reverse causation: Maybe B caused A, not the other way

Third variable: Maybe C caused both A and B

Sampling fallacies:

Unrepresentative sample: Surveyed 10 people at a gym about exercise habits

Self-selection bias: Only people who care responded to the survey

Evidence fallacies:

Absence of evidence: No proof it's harmful ≠ proof it's safe

Appeal to popularity: Everyone believes it, so it must be true

Percent vs number: 50% increase sounds big; 1 out of 2 doesn't

On flaw questions: The LSAT describes these in abstract language. "Treats a correlation as evidence of causation" = correlation/causation fallacy. Learn the LSAT's phrasing.

Reference:

Wikipedia: Fallacies

https://en.wikipedia.org/wiki/List_of_fallacies