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14-September-2008 12:50:28 - bias For an article about the conceptual problems of the mind see Cognitive closure philosophy. This article or section is missing citations or needs footnotes. Using inline citations helps guard against copyright violations and factual inaccuracies. October 2007 Psychology Greek letter 'psi' Portal History Areas RESEARCH Abnormal Biological Cognitive Developmental Emotion Experimental Evolutionary Mathematical Neuropsychology Neuroscience Personality Positive Psychophysics Social Transpersonal APPLIED Clinical Educational Forensic Health Industrial Organizational School Sport LISTS Publications Topics Therapies view talk A cognitive bias is a person's tendency to make errors in judgment based on cognitive factors, and is a phenomenon studied in cognitive science and social psychology. Forms of cognitive bias include errors in statistical judgment, social attribution, and memory that are common to all human beings. Such biases drastically skew the reliability of anecdotal and legal evidence. These are thought to be based upon heuristics, or rules of thumb, which people employ out of habit or evolutionary necessity. Contents 1 Overview 2 Types of cognitive biases 3 Practical Significance 4 See also 5 References 6 Further reading 7 External links Overview Bias arises from various life, loyalty and local risk and attention concerns that are difficult to separate or codify. Much of the present scientific understanding of biases stems from the work of Amos Tversky and Daniel Kahneman and their colleagues,citation needed whose experiments demonstrated distinct and replicable ways in which human judgment and decision-making differ from rational choice theory. This led to Tversky and Kahneman developing prospect theory as an alternative.citation needed Tversky and Kahneman claim that the biases they identified are at least partially the result of problem-solving using mental short-cuts or heuristics, for instance using how readily or vividly something comes to mind as an indication of how often or how recently it was encountered the availability heuristic. Other biases have been demonstrated in separate experiments, such as the confirmation bias demonstrated by Peter C. Wasoncitation needed Not all of 'biases' are necessarily errors. David Funder and Joachim Krueger have argued that some so called 'biases' may in fact be 'approximation shortcuts', which aid humans in making predictions when information is in short supply.citation needed For example, the false consensus effect may be viewed as a reasonable estimation based on a single known data point, your own opinion, instead of a false belief that other people agree with you. Types of cognitive biases Biases can be distinguished on a number of dimensions. For example, there are biases specific to groups such as the risky shift as well as biases at the individual level. Some biases affect decision-making, where the desirability of options has to be considered e.g. Sunk Cost fallacy. Others such as Illusory correlation affect judgment of how likely something is, or of whether one thing is the cause of another. A distinctive class of biases affect memory,1 such as consistency bias remembering one's past attitudes and behaviour as more similar to one's present attitudes. Some biases reflect a subject's motivation, 2 for example the desire for a positive self-image leading to Egocentric bias3 and the avoidance of unpleasant cognitive dissonance. Other biases are due to the particular way the brain perceives, forms memories and makes judgments. This distinction is sometimes described as Hot cognition versus Cold Cognition, as motivated cognition can involve a state of arousal. Among the cold biases, some are due to ignoring relevant information e.g. Neglect of probability, whereas some involve a decision or judgement being affected by irrelevant information for example the Framing effect where the exact same problem receives different responses depending on how it is described or giving excessive weight to an unimportant but salient feature of the problem e.g. Anchoring. The fact that some biases reflect motivation, and in particular the motivation to have positive attitudes to oneself3 accounts for the fact that many biases are self-serving or self-directed e.g. Illusion of asymmetric insight, Self-serving bias, Projection bias. There are also biases in how subjects evaluate in-groups or out-groups; evaluating in-groups as more diverse and better in many respects, even when those groups are arbitrarily-defined Ingroup bias, Outgroup homogeneity bias. The following is a list of the more commonly studied cognitive biases. For other noted biases, see list of cognitive biases. Anchoring on a past reference. Framing by using a too narrow approach and description of the situation or issue. Hindsight bias, sometimes called the I-knew-it-all-along effect, is the inclination to see past events as being predictable. Fundamental attribution error is the tendency for people to over-emphasize personality-based explanations for behaviors observed in others while under-emphasizing the role and power of situational influences on the same behavior. Confirmation bias is the tendency to search for or interpret information in a way that confirms one's preconceptions; this is related to the concept of cognitive dissonance. Self-serving bias is the tendency to claim more responsibility for successes than failures. It may also manifest itself as a tendency for people to evaluate ambiguous information in a way beneficial to their interests. Practical Significance Many social institutions rely on individuals to make rational judgments . A fair jury trial, for example, requires that the jury ignore irrelevant features of the case such as the attractiveness of the defendant, weigh the relevant features appropriately, consider different possibilities open-mindedly and resist fallacies such as appeal to emotion. The various biases demonstrated in these psychological experiments suggest that people will fail to do all these things. However, they fail to do so in systematic, directional ways that are predictable. AH Methodclarify decision maps illustrate the combination of reasons-claim argument strands as well as the influences of cognitive heuristics and psychological dominance structuring which emerge from those data. Researchers can compare decision maps illustrating how many different people have made a decision about the same question e.g. Should I have a doctor look at this troubling breast cancer symptom I've discovered. Why did I ignore the evidence that the project was going over budget? and then craft potential cognitive interventions aimed at improving decision making outcomes. See also Cognitive psychology Emotional bias Fallacy Critical thinking Evolutionary psychology Intelligence analysis Intelligence analysis management Cognitive traps for intelligence analysis Source criticism References ^ Schacter, D. L. 1999, The Seven Sins of Memory: Insights From Psychology and Cognitive Neuroscience, American Psychologist 543: 182-203 ^ Kunda, Z. 1990, The Case for Motivated Reasoning, Psychological Bulletin 1083: 480-498 ^ a b Hoorens, V. 1993, Self-enhancement and Superiority Biases in Social Comparison, in Stroebe, W. and Hewstone, Miles, European Review of Social Psychology 4, Wiley Further reading Haselton, M. G., Nettle, D. Andrews, P.W. 2005. The evolution of cognitive bias. In D. M. Buss Ed., Handbook of Evolutionary Psychology, pp. 724-746. Hoboken: Wiley. Full text Eiser, J. R. and Joop van der Pligt 1988 Attitudes and Decisions London: Routledge. ISBN 978-0415011129 Fine, Cordelia 2006 A Mind of its Own: How your brain distorts and deceives Cambridge, UK: Icon Books. ISBN 1-84046-678-2 Heuer, Richards J. Jr. 1999 Psychology of Intelligence Analysis. Central Intelligence Agency. http://www.au.af.mil/au/awc/awcgate/psych-intel/art5.html Kahneman D., Slovic P., and Tversky, A. Eds. 1982 Judgment Under Uncertainty: Heuristics and Biases. New York: Cambridge University Press ISBN 978-0521284141 Massimo Piatelli-Palmarini 1994. Inevitable Illusions: How Mistakes of Reason Rule Our Minds New York: John Wiley Sons. ISBN 0-471-15962-X Nisbett, R., and Ross, L. 1980 Human Inference: Strategies and shortcomings of human judgement. Englewood Cliffs, NJ: Prentice-Hall ISBN 978-0134451305 Stuart Sutherland 2007. Irrationality: The Enemy Within Second ion First ion 1994 Pinter Martin. ISBN 978-1905177073 Tavris, Carol and Elliot Aronson 2007. Mistakes Were Made But Not by Me: Why We Justify Foolish Beliefs, Bad Decisions and Hurtful Acts Orlando, Florida: Harcourt Books. ISBN 978-0-15-101098-1 External links The Roots of Consciousness: To Err Is human Cognitive bias in the financial arena Retrieved from http://en..org/wiki/Cognitive_bias Categories: Cognition | Cognitive biases | Decision theory | Intelligence analysisHidden categories: Articles with statements since October 2007 | All articles with statements | Articles with statements since April 2008 | articles needing clarification Views Article Discussion this page History Personal tools Log in / create account Navigation Main page Contents Featured content Current events Random article Search Go Search Interaction Community portal Recent changes Contact Donate to Help Toolbox What links here Related changes Upload file Special pages Printable version Permanent link Cite this page Languages Català Español Français עברית 日本語 Polski Nederlands Română This page was last modified on 26 August 2008, at 09:30
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