Reference effects on decision-making elicited by previous rewards

Cognition
Francesco Rigoli

Abstract

Substantial evidence has highlighted reference effects occurring during decision-making, whereby subjective value is not calculated in absolute terms but relative to the distribution of rewards characterizing a context. Among these, within-choice effects are exerted by options simultaneously available during choice. These should be distinguished from between-choice effects, which depend on the distribution of options presented in the past. Influential theories on between-choice effects include Decision-by-Sampling, Expectation-as-Reference and Divisive Normalization. Surprisingly, previous literature has focused on each theory individually disregarding the others. Thus, similarities and differences among theories remain to be systematically examined. Here we fill this gap by offering an overview of the state-of-the-art of research about between-choice reference effects. Our comparison of alternative theories shows that, at present, none of them is able to account for the full range of empirical data. To address this, we propose a model inspired by previous perspectives and based on a logistic framework, hence called logistic model of subjective value. Predictions of the model are analysed in detail about reference effects and r...Continue Reading

Citations

Sep 23, 2020·Proceedings of the National Academy of Sciences of the United States of America·Tsvetomira DumbalskaChristopher Summerfield
Mar 23, 2021·Cognitive, Affective & Behavioral Neuroscience·Francesco Rigoli, Cristina Martinelli

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