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Generalizations of risk-weighted expected utility

Kenny Easwaran

Economics and Philosophy2026https://doi.org/10.1017/s0266267125100618article
AJG 2ABDC A
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Abstract

Buchak’s risk-weighted expected utility considers not just the probability of an outcome, but also the probability of getting a strictly better outcome, when weighting the contribution that outcome gives to the evaluation of a gamble. It uses a risk-weighting function $R$ sending probabilities in $\left[ {0,1} \right]$ to decision weights $\left[ {0,1} \right]$ . I adapt this to allow weights in any real interval. Finite intervals yield nothing new, but if the interval is infinite, then the resulting rule can incorporate maximin or maximax preferences (or both!) while still satisfying stochastic dominance. There are advantages to working with marginal risk-weighting, $R$ ’s derivative, $r$ .

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https://doi.org/https://doi.org/10.1017/s0266267125100618

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@article{kenny2026,
  title        = {{Generalizations of risk-weighted expected utility}},
  author       = {Kenny Easwaran},
  journal      = {Economics and Philosophy},
  year         = {2026},
  doi          = {https://doi.org/https://doi.org/10.1017/s0266267125100618},
}

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