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• W4229448886 abstract "Context remarkably affects learning behavior by adjusting option values according to the distribution of available options. Displaying counterfactual outcomes, the outcomes of the unchosen option alongside the chosen one (i.e., providing complete feedback), would increase the contextual effect by inducing participants to compare the two outcomes during learning. However, when the context only consists of the juxtaposition of several options and there is no such explicit counterfactual factor (i.e., only partial feedback is provided), it is not clear whether and how the contextual effect emerges. In this research, we employ Partial and Complete feedback paradigms in which options are associated with different reward distributions. Our modeling analysis shows that the model that uses the outcome of the chosen option for updating the values of both chosen and unchosen options in opposing directions can better account for the behavioral data. This is also in line with the diffusive effect of dopamine on the striatum. Furthermore, our data show that the contextual effect is not limited to probabilistic rewards, but also extends to magnitude rewards. These results suggest that by extending the counterfactual concept to include the effect of the chosen outcome on the unchosen option, we can better explain why there is a contextual effect in situations in which there is no extra information about the unchosen outcome." @default.
• W4229448886 created "2022-05-11" @default.
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• W4229448886 date "2022-05-10" @default.
• W4229448886 modified "2023-09-26" @default.
• W4229448886 title "Implicit Counterfactual Effect in Partial Feedback Reinforcement Learning: Behavioral and Modeling Approach" @default.
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• W4229448886 doi "https://doi.org/10.3389/fnins.2022.631347" @default.
• W4229448886 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35620668" @default.
• W4229448886 hasPublicationYear "2022" @default.
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