English   105
esign
 Exchange
  Remember that logical fallacies are typically claims / arguments that are unfounded, unsupported, and / or unsupportable. Not only are these claims weak and without proof, but in many cases, there is no way to ever support these claims. Be careful in the claims you make in your papers; make sure all claims focus on your main thesis and do not introduce new tangents to your argument, as well as support your main thesis.

FallacyDescriptionExample
Ad Hominemattacking the person arguing rather than responding to that person's argumentpoliticians attacking each other's credibility rather than debating campaign issues
Ad Populumplaying on the prejudices of the audienceusing patriotism to sell products, especially post 9-11
Appeal to Traditionarguing that something should continue because it has traditionally existed or been that wayflying the Confederate Flag because it's tradition, without thinking of the possible implications or statements being made by such an act
Begging the Questionmaking a statement that assumes the issue being argued has already been decidedarguing that an absence from class should not affect your grade because the attendance policy is too strict; you need to prove that the attendance policy is too strict, first
False Analogyassuming without sufficient proof that if objects or processes are similar in some ways, then they are similar in other ways as wellraquetball and tennis both use raquets and balls, but it's not necessarily true that if you know how to play one, you can also play the other
False Authoritymisrepresenting sources or failing to acknowledge disagreement among expertsan argumemt omitting scientific data that supports an opposing argument, while providing data that supports the first argument; or, taking a quote out of context to support your argument
False Dilemmasimplifying a complex debate into two stances, when multiple stances existpeople are often forced into simplifiying their stance on abortion as "Pro-Choice" or "Pro-Life," when other possible viewpoints exist
False Emotional Appealssupporting an argument mainly with emotions, especially pity or fear, often in an effort to divert attention from the actual argument or conceal another purposeasking for an extension on a paper because you just found out you failed a test, when the real issue is that you simply procrastinated and didn't do your work
Hasty Generalizationdrawing conclusions from insufficient evidencetreating someone you've never met according stereotypes of that person's gender, sexual orientation, race, religion, etc.
Non Sequiturusing irrelevant proof to support a claimjust because a bunch of people went to see Old School does not mean it was a good movie
Post Hoc (Doubtful Cause)mistakenly inferring that because one event followed another that they have a causal relationassuming that someone's use of marijuana in high school was what led to that person's use of cocaine in college
Slippery Slopepredicting without justification that one action will undoubtedly lead to a second, often undesired, actionassuming that marijuana use will lead to use of cocaine
Straw Mandisputing a view similar to—but not the actual view—that of an opponentNixon's response to the accusation that he was campaign funds: that his family was given a dog, and they were going to keep it; failing to address the $18,000 in question

Taken from The Structure of Argument, by Annette Rottenberg.