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Contrasting heuristic vs holistic decisions| title | Contrasting heuristic vs holistic decisions |
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| start_date | 2024/10/11 |
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| schedule | 11h15-12h30 |
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| online | no |
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| location_info | 6th floor room |
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| summary | Recent studies have suggested that people are able to carry out fast multi-attribute decisions, in a compensatory and near normative way, based on the weighted-average (WAV), rather than deploying strategies that only examine part of the choice-information, as in the Take the Best (TTB) heuristic. In this talk I will first discuss a probabilistic extension of TTB, labeled SPA (single probabilistic attribute), which preserves the central idea that each decision is made based on a single attribute, but instead of selecting this attribute deterministically (based on well-ordered hierarchy of weights), it chooses this attribute based on a probabilistic sampling process. I will show that SPA and WAV are indistinguishable based on choices but are distinguishable based on RTs and will present an experiment, in which 54 participants carried out a speeded multi-attribute decision task with prescribed weights, to test which of the two models (WAV vs. SPA) is better supported by choice-RT data, previously classified as WAV. The results undermine the predictions of the SPA model, indicating that about 70% of participants are able to carry out fast and compensatory decisions that attend to (and weight) all choice attributes. Finally, I will suggest that the WAV mechanism is based on holistic within-alternative processing, and will contrast between this and traditional decision strategies based on within-attribute comparisons, showing the former reduces non-normative violations of transitivity of preference. |
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| responsibles | Saucet, Pejsachowicz |
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Workflow history| from state (1) | to state | comment | date |
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| submitted | published | | 2024/10/10 08:15 UTC |
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