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availability bias
(redirected from Availability heuristic)

   Also found in: Wikipedia 0.03 sec.
availability bias
Risk analysis A bias in risk assessment in which a Pt overestimates the risk of an adverse outcome based on the notoriety of the risk–eg breast CA in ♀. See Bias. Cf Anchoring bias.


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One major flaw Sameroff and Chandler uncovered was researchers' use of the availability heuristic in their estimations of developmental risk factors.
Given the previous analysis that showed that HIV infection through unprotected vaginal intercourse between non-IDU heterosexuals is a highly unlikely event, and that HIV infection is a highly publicized topic, we used Tversky and Kahneman's (1974) availability heuristic to make our hypothesis concerning the accuracy of our participants' perceptions of p(STD | 1).
 
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