Humans adaptively deploy forward and backward prediction

Paul B. Sharp () and Eran Eldar ()
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Paul B. Sharp: Hebrew University of Jerusalem
Eran Eldar: Hebrew University of Jerusalem

Nature Human Behaviour, 2024, vol. 8, issue 9, 1726-1737

Abstract: Abstract The formation of predictions is essential to our ability to build models of the world and use them for intelligent decision-making. Here we challenge the dominant assumption that humans form only forward predictions, which specify what future events are likely to follow a given present event. We demonstrate that in some environments, it is more efficient to use backward prediction, which specifies what present events are likely to precede a given future event. This is particularly the case in diverging environments, where possible future events outnumber possible present events. Correspondingly, in six preregistered experiments (n = 1,299) involving both simple decision-making and more challenging planning tasks, we find that humans engage in backward prediction in divergent environments and use forward prediction in convergent environments. We thus establish that humans adaptively deploy forward and backward prediction in the service of efficient decision-making.

Date: 2024
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DOI: 10.1038/s41562-024-01930-8

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