Informal Fallacy Exercises

These fallacy exercises incorporate the standard set of informal fallacies that most logic textbooks cover.

Here, informal fallacies are divided into fallacies of relevance and fallacies of presumption.

Fallacies of relevance include: ad ignorantiam, ad hominem, ad populum, ad misericordiam, ad baculum and ignoratio elenchi (irrelevant conclusion).

Fallacies of presumption include: petitio principii (circular argument), complex question, false cause, accident, and converse accident.

• Short Informal Fallacy Quizzes

  Quiz 1 tests informal fallacies of relevance; quiz 2 test informal fallacies of presumption.

  Relevance Quiz 1

  Presumption Quiz 2
  
  

• Fallacies of Relevance

  Fallacies include ad ignorantiam, ad hominem, ad populum, ad misericordiam, ad baculum and ignoratio elenchi (irrelevant conclusion).

  Relevance 1 — Answers

  Relevance 2 — Answers
  
  

• Fallacies of Presumption

  Fallacies include petitio principii (circular argument), complex question, false cause, accident, and converse accident.

  Presumption 1 — Answers

  Presumption 2 — Answers