Heuristics and biases Flashcards
Planning fallacy
a phenomenon in which predictions about how much time will be needed to complete a future task display an optimism bias (underestimate the time needed).
Fundamental cognitive error
People tend to underestimate the contribution of their beliefs and theories to observation and judgement, and fail to realise how many other ways that they could have been interpreted
Above average effect
the tendency for people to rate themselves as above the average on most positive social attributes
Priming effect
Phenomenon wherein giving a participant advance knowledge about or exposure to a stimulus can increase the ease of its subsequent recall or recognition.
Example : If you have recently seen or heard the word eat, you are temporarily more likely to fill in so_p as soup rather than soap.”
In this case, the word eat primes the word or idea of soup
Confirmation bias
A tendency to search for information that confirms one’s preconceptions
Hindsight bias
the tendency of people to overestimate their ability to have predicted an outcome that could not possibly have been predicted.
Illusory correlation
the phenomenon of perceiving arelationshipbetween variables (typically people, events, or behaviors) even when no such relationship exists
Gambler’s fallacy
the phenomenon where one predicts the probability of an event on the basis of how many times this event happened before
Regression toward the mean
is the phenomenon that if a variable is extreme on its first measurement, it will tend to be closer to the average on its second measurement—and if it is extreme on its second measurement, it will tend to have been closer to the average on its first
Barnum effect
is the observation that individuals will give high accuracy ratings to descriptions of their personality that supposedly are tailored specifically for them but are, in fact, vague and general enough to apply to a wide range of people. This effect can provide a partial explanation for the widespread acceptance of some beliefs and practices, such as astrology, fortune telling, graphology, aura reading and some types of personality tests
Cognitive dissonance
themental stressor discomfort experienced by an individual who holds two or more contradictory beliefs, ideas, or values at the same time; performs an action that is contradictory to one or more beliefs, ideas, or values; or is confronted by new information that conflicts with existing beliefs, ideas, or values.
Experiment Expectancy Effect (Observer effect)
a form of reactivity in which a researcher’s cognitive bias causes them to subconsciously influence the participants of an experiment. Confirmation bias can lead to the experimenter interpreting results incorrectly because of the tendency to look for information that conforms to their hypothesis, and overlook information that argues against it
False consensus effect
a tendency to overestimate the degree to which other people agree with our beliefs, values, attitudes and behaviors.
Fundamental attribution error
the tendency to place a significant amount of blame on a persons personality or characteristics rather than situational factors
Bystander effect
a phenomenon that refers to cases in which individuals do not offer any means of help to a victim when other people are present. The probability of help is inversely related to the number of bystanders. In other words, the greater the number of bystanders, the less likely it is that any one of them will help
Channel factors
small situational factors can have large influences on behavior by guiding behavior in a particular direction