I think this is pretty much exhaustive:
- FAULTY CAUSE: (post hoc ergo propter hoc) mistakes correlation or association for causation, by assuming that because one thing follows another it was caused by the other.
example: The introduction of sex education courses at the high school level has resulted in increased promiscuity among teens. A recent study revealed that the number of reported cases of STDs (sexually transmitted diseases) was significantly higher for high schools that offered courses in sex education than for high schools that did not.
- SWEEPING GENERALIZATION: (dicto simpliciter) assumes that what is true of the whole will also be true of the part, or that what is true in most instances will be true in all instances.
example: Muffin must be rich or have rich parents, because she belongs to ZXQ, and ZXQ is the richest sorority on campus.
example: I’d like to hire you, but you’re an ex-felon and statistics show that 80% of ex-felons recidivate.
- HASTY GENERALIZATION: bases an inference on too small a sample, or on an unrepresentative sample. Often, a single example or instance is used as the basis for a broader generalization.
example: All of those movie stars are really rude. I asked Kevin Costner for his autograph in a restaurant in Westwood the other evening, and he told me to get lost.
example: Pit Bulls are actually gentle, sweet dogs. My next door neighbor has one and his dog loves to romp and play with all the kids in the neighborhood!
- FAULTY ANALOGY: (can be literal or figurative) assumes that because two things, events, or situations are alike in some known respects, that they are alike in other unknown respects.
example: What’s the big deal about the early pioneers killing a few Indians in order to settle the West? After all, you can’t make an omelette without breaking a few eggs.
example: Banning “head” shops from selling drug paraphernalia in order to curb drug abuse makes about as much sense as banning bikinis to reduce promiscuity.
- APPEAL TO IGNORANCE: (argumentum ad ignorantiam) attempts to use an opponent’s inability to disprove a conclusion as proof of the validity of the conclusion, i.e. “You can’t prove I’m wrong, so I must be right.”
example: We can safely conclude that there is intelligent life elsewhere in the galaxy, because thus far no one has been able to prove that there is not.
example: The new form of experimental chemotherapy must be working; not a single patient has returned to complain.
- BIFURCATION: (either-or, black or white, all or nothing fallacy) assumes that two categories are mutually exclusive and exhaustive, that is, something is either a member of one or the other, but not both or some third category.
example: Either you favor a strong national defense, or you favor allowing other nations to dictate our foreign policy.
example: It’s not TV. It’s HBO.
- FALSE DILEMMA: (a form of bifurcation) implies that one of two outcomes is inevitable, and both have negative consequences.
example: Either you buy a large car and watch it guzzle away your paycheck, or you buy a small car and take a greater risk of being injured or killed in the event of an accident.
example: You can put your money in a savings account, in which case the IRS will tax you on the interest, and inflation will erode the value of your money, or you can avoid maintaining a savings account in which case you will have nothing to fall back on in a financial emergency.
- FAULTY SIGN: (also includes argument from circumstance) wrongly assumes that one event or phenomenon is a reliable indicator or predictor of another event or phenomenon.
example: the cars driving in the opposite direction have their lights on; they must be part of a funeral procession.
example: That guy is wearing a Raiders jacket and baggy pants. I’ll bet he’s a gang member.
- DAMNING THE SOURCE: (ad hominem, sometimes called the genetic fallacy) attempts to refute an argument by indicting the source of the argument, rather than the substance of the argument itself.
example: There is no reason to listen to the arguments of those who oppose school prayer, for they are the arguments of atheists!
example: The American Trial Lawyers Association favors of this piece of legislation, so you know it has to be bad for ordinary citizens.
- TU QUOQUE: (look who’s talking or two wrongs make a right) pointing to a similar wrong or error committed by another.
example: Gee, Mom and Dad, how can you tell me not to do drugs when you both smoke cigarettes and drink alcohol?
example: The United States has no business criticizing the human rights policies of the Third World nations, not as long as discrimination and segregation continue to exist in the United States.
- EQUIVOCATION: allows a key word or term in an argument to shift its meaning during the course of the argument. The result is that the conclusion of the argument is not concerned with the same thing as the premise(s).
example: Only man is rational. No woman is a man. Therefore, no woman is rational.
example: No one who has the slightest acquaintance with science can reasonably doubt that the miracles in the Bible actually took place. Every year we witness countless new miracles in the form recombinant DNA, micro-chips, organ transplants, and the like. (the word “miracle” does not have the same meaning in each case)
- BEGGING THE QUESTION: (petitio principii) entails making an argument, the conclusion of which is based on an unstated or unproven assumption. In question form, this fallacy is known as a COMPLEX QUESTION.
example: Abortion is murder, since killing a baby is an act of murder.
example: Have you stopped beating your wife?
- TAUTOLOGY: (a sub-category of circular argument) defining terms or qualifying an argument in such a way that it would be impossible to disprove the argument. Often, the rationale for the argument is merely a restatement of the conclusion in different words.
example: The Bible is the word of God. We know this because the Bible itself tells us so.
example: You are a disagreeable person and, if you disagree with me on this, it will only further prove what a disagreeable person you are.
- APPEAL TO AUTHORITY: (ipse dixit also called ad verecundiam sometimes) attempts to justify an argument by citing a highly admired or well-known (but not necessarily qualified) figure who supports the conclusion being offered.
example: If it’s good enough for (insert celebrity’s name here), it’s good enough for me.
example: Laws against marijuana are plain silly. Why, Thomas Jefferson is known to have raised hemp on his own plantation.
- APPEAL TO TRADITION: (don’t rock the boat or ad verecundiam) based on the principle of “letting sleeping dogs lie”. We should continue to do things as they have been done in the past. We shouldn’t challenge time-honored customs or traditions.
example: Of course we have to play “pomp and circumstance” at graduation, because that’s always been the song that is played.
example: Why do I make wine this way? Because my father made wine this way, and his father made wine this way.
- APPEAL TO THE CROWD: (ad populum or playing to the gallery) refers to popular opinion or majority sentiment in order to provide support for a claim. Often the “common man” or “common sense” provides the basis for the claim.
example: all I can say is that if living together is immoral, then I have plenty of company.
example: Professor Windplenty’s test was extremely unfair. Just ask anyone who took it.
- STRAW MAN: stating an opponent’s argument in an extreme or exaggerated form, or attacking a weaker, irrelevant portion of an opponent’s argument.
example: A mandatory seat belt law could never be enforced. You can’t issue citations to dead people.
example: What woman in her right mind could truly desire total equality with men? No woman wants the right to be shot at in times of war, the right to have to pay alimony, or the right to have to use the same restrooms as men.
- SLIPPERY SLOPE: (sometimes called a snowball argument or domino theory) suggests that if one step or action is taken it will invariably lead to similar steps or actions, the end results of which are negative or undesirable. A slippery slope always assume a chain reaction of cause-effect events which result in some eventual dire outcome.
example: If the Supreme Court allows abortion, next think you know they’ll allow euthanasia, and it won’t be long before society disposes of all those persons whom it deems unwanted or undesirable.
example: If I let one student interrupt my lecture with a question, then I’ll have to let others and, before long, there won’t be any time left for my lecture.
- APPEALING TO EXTREMES: A fallacy very similar to slippery slope, which involves taking an argumentative claim or assertion to its extreme, even though the arguer does not advocate the extreme interpretation. The difference between the two fallacies is that appealing to extremes does not necessarily involve a sequence of causal connections.
example: Husband to ex-wife: Well, if you want to be completely fair about dividing everything up, you should get one of my testicles and I should get one of your breasts!
example: Debtor to creditor: Hey, you’ve already repossessed my car and my television. Why don’t you just draw a quart of blood or carve a pound of flesh from my heart too?
- HYPOTHESIS CONTRARY TO FACT: This fallacy consists of offering a poorly supported claim about what might have happened in the past or future if circumstances or conditions were other than they actually were or are. The fallacy also involves treating hypothetical situations as if they were fact.
example: If you had only tasted the stewed snails, I’m sure you would have liked them.
example: If Hitler had not invaded Russia and opened up two military fronts, the Nazis would surely have won the war.
- NON SEQUITAR: (literally means “does not follow”) in a general sense any argument which fails to establish a connection between the premises and the conclusion may be called a non-sequitar. In practice, however, the label non-sequitar tends to be reserved for arguments in which irrelevant reasons are offered to support a claim.
example: I wore a red shirt when I took the test, so that is probably why I did so well on the test.
example: Mr Boswell couldn’t be the person who poisoned our cat, Truffles, because when I used to take Truffles for walks he always smiled and said “Hello” when we walked by.
- RED HERRING: attempting to hide a weakness in an argument by drawing attention away from the real issue. A red herring fallacy is thus a diversionary tactic or an attempt to confuse or fog the issue being debated. The name of the fallacy comes from the days of fox hunting, when a herring was dragged across the trail of a fox in order to throw the dogs off the scent.
example: accused by his wife of cheating at cards, Ned replies “Nothing I do ever pleases you. I spent all last week repainting the bathroom, and then you said you didn’t like the color.”
example: There’s too much fuss and concern about saving the environment. We can’t create an Eden on earth. And even if we could, remember Adam and Eve got bored in the Garden of Eden anyway!
- INCONSISTENCY: advancing an argument that is self-contradictory, or that is based on mutually inconsistent premises.
Example: A used car salespersons says, “Hey, you can’t trust those other car salesman. They’ll say anything to gt you to buy a car from them.”
Example: A parent has just read a child the story of Cinderella. The child asks, “If the coach, and the footmen, and the beautiful clothes all turned back into the pumpkin, the mice, and the rags, then how come the glass slipper didn’t change back too?”
- Choice-supportive bias: remembering chosen options as having been better than rejected options.
- Change bias: after an investment of effort in producing change, remembering one’s past performance as more difficult than it actually was.
- Childhood amnesia: the retention of few memories from before the age of four.
- Conservatism or Regressive Bias – tendency to remember high values and high likelihoods/probabilities/frequencies lower than they actually were and low ones higher than they actually were. Based on the evidence, memories are not extreme enough.
- Consistency bias: incorrectly remembering one’s past attitudes and behaviour as resembling present attitudes and behaviour.
- Context effect: that cognition and memory are dependent on context, such that out-of-context memories are more difficult to retrieve than in-context memories (e.g., recall time and accuracy for a work-related memory will be lower at home, and vice versa)
- Cross-race effect: the tendency for people of one race to have difficulty identifying members of a race other than their own.
- Cryptomnesia: a form of misattribution where a memory is mistaken for imagination, because there is no subjective experience of it being a memory.
- Egocentric bias: recalling the past in a self-serving manner, e.g., remembering one’s exam grades as being better than they were, or remembering a caught fish as bigger than it really was.
- Fading affect bias: a bias in which the emotion associated with unpleasant memories fades more quickly than the emotion associated with positive events.
- False memory – a form of misattribution where imagination is mistaken for a memory.
- Generation effect (Self-generation effect): that self-generated information is remembered best. For instance, people are better able to recall memories of statements that they have generated than similar statements generated by others.
- Google effect: the tendency to forget information that can be easily found online.
- Hindsight bias: the inclination to see past events as being predictable; also called the “I-knew-it-all-along” effect.
- Humor effect: that humorous items are more easily remembered than non-humorous ones, which might be explained by the distinctiveness of humor, the increased cognitive processing time to understand the humor, or the emotional arousal caused by the humor.
- Illusion-of-truth effect: that people are more likely to identify as true statements those they have previously heard (even if they cannot consciously remember having heard them), regardless of the actual validity of the statement. In other words, a person is more likely to believe a familiar statement than an unfamiliar one.
- Illusory correlation – inaccurately remembering a relationship between two events.
- Lag effect: see spacing effect.
- Leveling and Sharpening: memory distortions introduced by the loss of details in a recollection over time, often concurrent with sharpening or selective recollection of certain details that take on exaggerated significance in relation to the details or aspects of the experience lost through leveling. Both biases may be reinforced over time, and by repeated recollection or re-telling of a memory.
- Levels-of-processing effect: that different methods of encoding information into memory have different levels of effectiveness.
- List-length effect: a smaller percentage of items are remembered in a longer list, but as the length of the list increases, the absolute number of items remembered increases as well.
- Misinformation effect: that misinformation affects people’s reports of their own memory.
- Misattribution: when information is retained in memory but the source of the memory is forgotten.
- Modality effect: that memory recall is higher for the last items of a list when the list items were received via speech than when they were received via writing.
- Mood congruent memory bias: the improved recall of information congruent with one’s current mood.
- Next-in-line effect: that a person in a group has diminished recall for the words of others who spoke immediately before or after this person.
- Osborn effect: that being intoxicated with a mind-altering substance makes it harder to retrieve motor patterns from the Basal Ganglion.
- Part-list cueing effect: that being shown some items from a list makes it harder to retrieve the other items.
- Peak-end effect: that people seem to perceive not the sum of an experience but the average of how it was at its peak (e.g. pleasant or unpleasant) and how it ended.
- Persistence: the unwanted recurrence of memories of a traumatic event.
- Picture superiority effect: that concepts are much more likely to be remembered experientially if they are presented in picture form than if they are presented in word form.
- Placement bias – tendency to remember ourselves to be better than others at tasks at which we rate ourselves above average (also Illusory superiority or Better-than-average effect) and tendency to remember ourselves to be worse than others at tasks at which we rate ourselves below average (also Worse-than-average effect).
- Positivity effect: that older adults favor positive over negative information in their memories.
- Primacy effect, Recency effect & Serial position effect: that items near the end of a list are the easiest to recall, followed by the items at the beginning of a list; items in the middle are the least likely to be remembered.
- Processing difficulty effect
- Reminiscence bump: the recalling of more personal events from adolescence and early adulthood than personal events from other lifetime periods.
- Rosy retrospection: the remembering of the past as having been better than it really was.
- Self-reference effect: the phenomena that memories encoded with relation to the self are better recalled than similar information encoded otherwise.
- Self-serving bias – perceiving oneself responsible for desirable outcomes but not responsible for undesirable ones.
- Source Confusion: misattributing the source of a memory, e.g. misremembering that one saw an event personally when actually it was seen on television.
- Spacing effect: that information is better recalled if exposure to it is repeated over a longer span of time.
- Stereotypical bias: memory distorted towards stereotypes (e.g. racial or gender), e.g. “black-sounding” names being misremembered as names of criminals.
- Suffix effect: the weakening of the recency effect in the case that an item is appended to the list that the subject is not required to recall.
- Suggestibility: a form of misattribution where ideas suggested by a questioner are mistaken for memory.
- Subadditivity effect – the tendency to estimate that the likelihood of a remembered event is less than the sum of its (more than two) mutually exclusive components.
- Telescoping effect: the tendency to displace recent events backward in time and remote events forward in time, so that recent events appear more remote, and remote events, more recent.
- Testing effect: that frequent testing of material that has been committed to memory improves memory recall.
- Tip of the tongue phenomenon: when a subject is able to recall parts of an item, or related information, but is frustratingly unable to recall the whole item. This is thought to be an instance of “blocking” where multiple similar memories are being recalled and interfere with each other.
- Verbatim effect: that the “gist” of what someone has said is better remembered than the verbatim wording.
- Von Restorff effect: that an item that sticks out is more likely to be remembered than other items.
- Zeigarnik effect: that uncompleted or interrupted tasks are remembered better than completed ones.
Some I might have forgotten might be included in this list.