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Dictionary of Psychology >> Confirmation Bias
Confirmation Bias
A family of effects in which people seem more sensitive to evidence confirming their beliefs than they are to evidence challenging their beliefs.
Thus if people are given a choice about what sort of information they would like in order to evaluate their beliefs, they request information that is likely to confirm their beliefs.
Likewise, if they are presented with both confirming and disconfirming evidence, they are more likely to pay attention to, to be influenced by, and to remember the confirming evidence, rather than the disconfirming.
Confirmation bias can be summarized as a natural human tendency to search for information that supports our hypotheses.
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