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A listing of cognitive errors humans are prone to.
Terms in this set (74)
the tendency to avoid options for which missing information makes the probability seem "unknown."
The tendency to rely too heavily, or "anchor," on a past reference or on one trait or piece of information when making decisions (also called "insufficient adjustment").
the tendency of emotionally dominant stimuli in one's environment to preferentially draw and hold attention and to neglect relevant data when making judgments of a correlation or association.
estimating what is more likely by what is more available in memory, which is biased toward vivid, unusual, or emotionally charged examples.
a self-reinforcing process in which a collective belief gains more and more plausibility through its increasing repetition in public discourse (or "repeat something long enough and it will become true").
when people react to disconfirming evidence by strengthening their beliefs
the tendency to do (or believe) things because many other people do (or believe) the same. Related to groupthink and herd behavior.
Base rate neglect or Base rate fallacy
the tendency to base judgments on specifics, ignoring general statistical information.
an effect where someone's evaluation of the logical strength of an argument is biased by the believability of the conclusion.
Bias blind spot
the tendency to see oneself as less biased than other people.
the tendency to remember one's choices as better than they actually were.
the tendency to see patterns where actually none exist. Also referred to as "patternicity" by author Michael Shermer.
the tendency to search for or interpret information in a way that confirms one's preconceptions.
the tendency to test hypotheses exclusively through direct testing, in contrast to tests of possible alternative hypotheses.
the tendency to assume that specific conditions are more probable than general ones.
Conservatism or Regressive Bias
tendency to underestimate high values and high likelihoods/probabilities/frequencies and overestimate low ones. Based on the observed evidence, estimates are not extreme enough
the enhancement or diminishing of a weight or other measurement when compared with a recently observed contrasting object.
the tendency to spend more money when it is denominated in small amounts (e.g. coins) rather than large amounts (e.g. bills)
the tendency to view two options as more dissimilar when evaluating them simultaneously than when evaluating them separately.
the tendency to underestimate the influence or strength of feelings, in either oneself or others.
the fact that people often demand much more to give up an object than they would be willing to pay to acquire it.
categorizing people and things according to their essential nature, in spite of variations.
based on the estimates, real-world evidence turns out to be less extreme than our expectations (conditionally inverse of the conservatism bias).
Experimenter's or Expectation bias
the tendency for experimenters to believe, certify, and publish data that agree with their expectations for the outcome of an experiment, and to disbelieve, discard, or downgrade the corresponding weightings for data that appear to conflict with those expectations.
the tendency to place too much importance on one aspect of an event; causes error in accurately predicting the utility of a future outcome.[
the tendency to create models based on past data which are validated only against that past data
drawing different conclusions from the same information, depending on how that information is presented.
the illusion in which a word, a name or other thing that has recently come to one's attention suddenly appears "everywhere" with improbable frequency (see also recency illusion).
the tendency to think that future probabilities are altered by past events, when in reality they are unchanged. "I've flipped heads with this coin five times consecutively, so the chance of tails coming out on the sixth flip is much greater than heads."
Based on a specific level of task difficulty, the confidence in judgments is too conservative and not extreme enough
sometimes called the "I-knew-it-all-along" effect, the tendency to see past events as being predictable at the time those events happened.(sometimes phrased as "Hindsight is 20/20")
Hostile Media Effect
the tendency to see a media report as being biased due to one's own strong partisan views.
the tendency for people to have a stronger preference for more immediate payoffs relative to later payoffs, where the tendency increases the closer to the present both payoffs are.[
Illusion of Control
the tendency to overestimate one's degree of influence over other external events.[
inaccurately perceiving a relationship between two unrelated events.[
the tendency to overestimate the length or the intensity of the impact of future feeling states.[
the tendency to seek information even when it cannot affect action.
the phenomenon where people justify increased investment in a decision, based on the cumulative prior investment, despite new evidence suggesting that the decision was probably wrong.
the tendency for people to want to believe that the world is fundamentally just, causing them to rationalize an otherwise inexplicable injustice as deserved by the victim(s).
the tendency of people to choose the option they know best rather than the best option.[
"the disutility of giving up an object is greater than the utility associated with acquiring it". (see also Sunk cost effects and endowment effect).
Mere exposure effect
the tendency to express undue liking for things merely because of familiarity with them.
the tendency to concentrate on the nominal (face value) of money rather than its value in terms of purchasing power.[
Moral credential effect
the tendency of a track record of non-prejudice to increase subsequent prejudice.
the tendency to pay more attention and give more weight to negative than positive experiences or other kinds of information.
Neglect of Probability
the tendency to completely disregard probability when making a decision under uncertainty.[
the refusal to plan for, or react to, a disaster which has never happened before.
when a researcher expects a given result and therefore unconsciously manipulates an experiment or misinterprets data in order to find it (see also subject-expectancy effect).
the tendency to judge harmful actions as worse, or less moral, than equally harmful omissions (inactions).
the tendency to be over-optimistic, overestimating favorable and pleasing outcomes (see also wishful thinking, valence effect, positive outcome bias)
ignoring an obvious (negative) situation.
the tendency to judge a decision by its eventual outcome instead of based on the quality of the decision at the time it was made.
excessive confidence in one's own answers to questions. For example, for certain types of questions, answers that people rate as "99% certain" turn out to be wrong 40% of the time.[
a vague and random stimulus (often an image or sound) is perceived as significant, e.g., seeing images of animals or faces in clouds, the man in the moon, and hearing hidden messages on records played in reverse.
the tendency for some people, especially those suffering from depression, to overestimate the likelihood of negative things happening to them.
the tendency to underestimate task-completion times.[
the tendency to persuade oneself through rational argument that a purchase was a good value.
the greater ease of recall of initial items in a sequence compared to items in the middle of the sequence.
the tendency to reflect a personal bias towards an invention/innovation, while often failing to identify limitations and weaknesses or address the possibility of failure.
the tendency to make risk-averse choices if the expected outcome is positive, but make risk-seeking choices to avoid negative outcomes
the urge to do the opposite of what someone wants you to do out of a need to resist a perceived attempt to constrain your freedom of choice.
a cognitive bias that results from disproportionate salience of recent stimuli or observations - the tendency to weigh recent events more than earlier events (see also peak-end rule).
the illusion that a phenomenon, typically a word or language usage, that one has just begun to notice is a recent innovation (see also frequency illusion).
Regressive Bayesian likelihood
Regressive Bayesian likelihood - estimates of conditional probabilities are conservative and not extreme enough
the tendency to overestimate one's ability to show restraint in the face of temptation
the tendency for expectations to affect perception.
the tendency to reject new evidence that contradicts a paradigm
Social Comparison bias
the tendency, when making hiring decisions, to favour potential candidates who don't compete with one's own particular strengths.
Status Quo Bias
the tendency to like things to stay relatively the same (see also loss aversion, endowment effect, and system justification)
the tendency to estimate that the likelihood of an event is less than the sum of its (more than two) mutually exclusive components.[
perception that something is true if a subject's belief demands it to be true. Also assigns perceived connections between coincidences.
the tendency to want to finish a given unit of a task or an item. Strong effects on the consumption of food in particular
Well Travelled road effect
underestimation of the duration taken to traverse oft-traveled routes and over-estimate the duration taken to traverse less familiar routes.
Zero Risk Bias
preference for reducing a small risk to zero over a greater reduction in a larger risk.
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