01b_Heuristics & Cognitive Errors and Biases Flashcards
Heuristics
Overview
Mental shortcuts / Rules-of-thumb
Speed of judgment decreases accuracy
Representativeness Heuristic
Categorizing someone based on how representative or similar they are to that category
Ignores base rate data
Availability Heuristic
Belief in increased likelihood of event when information about the event is easier to remember
(how available the info is in memory)
Increased by number and salience of examples recalled from LTM
Simulation Heuristic
The easier something is to envision (mental simulation), the more one believes it is likely to happen
Olympic athletes who win the silver medal appear to be less happy about their win than those win the bronze medal.
Which heuristic is linked to this phenomenon?
Simulation Heuristic
i.e., It is easier for silver medalists to imagine winning the gold (compared to bronze medalists)
Anchoring and Adjustment Heuristic
An initial value (anchor) is used as the basis is is used as the basis for making a judgment or estimate
Subsequent adjustments up or down are made using that starting value (anchor)
Cognitive Errors and Biases:
Base Rate Fallacy
Reliance on case-specific information instead of base rate data when estimating the likelihood of an event or characteristic
Considerations/ Research that raises doubts about
Base Rate Fallacy
People do not ignore base rates as often as research suggests
BRF is a combo of representativeness or availability heuristic, not it’s own phenomenon
Confirmation Bias
Attentional bias toward info that confirms one’s beliefs
+
Ignoring/invalidating info that does not
Confirmation bias:
Related phenomena
Paranormal beliefs
Hypochondriasis
Paranoia
Persistence of stereotypes
Illusory Correlation
Belief in a connection between 2 unrelated variables
Possible explanations of Illusory Correlation
Result of schema that links the two variables
Evolutionary survival value of identifying causal patterns
False Consensus Effect
Overestimation of the degree to which the views, opinions, and behaviors of others are similar to our own
Gamblers’s Fallacy
Belief that likelihood of a particular chance event is affected by the occurrence of previous events
*There is actually no relationship between the events
e. g. a gambler who hasn’t won in awhile and thinks “I’m due for a win” even though the odds are exactly the same