Extension neglect
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Extension neglect is a category of cognitive bias defined as appearing when "unless attention is specifically directed to it, the size of the set has little or no influence on its valuation"[1]
However, if attention is drawn to set size in an easily interpretable way, an additive extension effect is reported, according to which the valuation of a set is a function of the valuation of a prototypical member of the set added to set size, rather than multiplied.[2]
Forms of extension neglect include:
- base rate neglect
- insensitivity to sample size
- scope neglect
- duration neglect
- the peak-end rule
- the conjunction fallacy
- the less-is-better effect
Extension neglect is described as being caused by judgment by prototype, a refinement of the representativeness heuristic.
References
- ↑ Kaheman, Daniel (2000). "Evaluation by moments, past and future". In Daniel Kahneman and Amos Tversky (Eds.). Choices, Values and Frames. p. 708.
- ↑ Kahneman, 2000
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