Individual differences in experienced and observational decision-making illuminate interactions between reinforcement learning and declarative memory

Abstract Decision making can be shaped both by trial-and-error experiences and by memory of unique contextual information. Moreover, these types of information can be acquired either by means of active experience or by observing others behave in similar situations. The interactions between reinforce...

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Autores principales:	Batel Yifrah, Ayelet Ramaty, Genela Morris, Avi Mendelsohn
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/861d269d112f4b6e8d3363bbd817ae99
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id	oai:doaj.org-article:861d269d112f4b6e8d3363bbd817ae99
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spelling	oai:doaj.org-article:861d269d112f4b6e8d3363bbd817ae992021-12-02T16:31:02ZIndividual differences in experienced and observational decision-making illuminate interactions between reinforcement learning and declarative memory10.1038/s41598-021-85322-22045-2322https://doaj.org/article/861d269d112f4b6e8d3363bbd817ae992021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-85322-2https://doaj.org/toc/2045-2322Abstract Decision making can be shaped both by trial-and-error experiences and by memory of unique contextual information. Moreover, these types of information can be acquired either by means of active experience or by observing others behave in similar situations. The interactions between reinforcement learning parameters that inform decision updating and memory formation of declarative information in experienced and observational learning settings are, however, unknown. In the current study, participants took part in a probabilistic decision-making task involving situations that either yielded similar outcomes to those of an observed player or opposed them. By fitting alternative reinforcement learning models to each subject, we discerned participants who learned similarly from experience and observation from those who assigned different weights to learning signals from these two sources. Participants who assigned different weights to their own experience versus those of others displayed enhanced memory performance as well as subjective memory strength for episodes involving significant reward prospects. Conversely, memory performance of participants who did not prioritize their own experience over others did not seem to be influenced by reinforcement learning parameters. These findings demonstrate that interactions between implicit and explicit learning systems depend on the means by which individuals weigh relevant information conveyed via experience and observation.Batel YifrahAyelet RamatyGenela MorrisAvi MendelsohnNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Batel Yifrah Ayelet Ramaty Genela Morris Avi Mendelsohn Individual differences in experienced and observational decision-making illuminate interactions between reinforcement learning and declarative memory
description	Abstract Decision making can be shaped both by trial-and-error experiences and by memory of unique contextual information. Moreover, these types of information can be acquired either by means of active experience or by observing others behave in similar situations. The interactions between reinforcement learning parameters that inform decision updating and memory formation of declarative information in experienced and observational learning settings are, however, unknown. In the current study, participants took part in a probabilistic decision-making task involving situations that either yielded similar outcomes to those of an observed player or opposed them. By fitting alternative reinforcement learning models to each subject, we discerned participants who learned similarly from experience and observation from those who assigned different weights to learning signals from these two sources. Participants who assigned different weights to their own experience versus those of others displayed enhanced memory performance as well as subjective memory strength for episodes involving significant reward prospects. Conversely, memory performance of participants who did not prioritize their own experience over others did not seem to be influenced by reinforcement learning parameters. These findings demonstrate that interactions between implicit and explicit learning systems depend on the means by which individuals weigh relevant information conveyed via experience and observation.
format	article
author	Batel Yifrah Ayelet Ramaty Genela Morris Avi Mendelsohn
author_facet	Batel Yifrah Ayelet Ramaty Genela Morris Avi Mendelsohn
author_sort	Batel Yifrah
title	Individual differences in experienced and observational decision-making illuminate interactions between reinforcement learning and declarative memory
title_short	Individual differences in experienced and observational decision-making illuminate interactions between reinforcement learning and declarative memory
title_full	Individual differences in experienced and observational decision-making illuminate interactions between reinforcement learning and declarative memory
title_fullStr	Individual differences in experienced and observational decision-making illuminate interactions between reinforcement learning and declarative memory
title_full_unstemmed	Individual differences in experienced and observational decision-making illuminate interactions between reinforcement learning and declarative memory
title_sort	individual differences in experienced and observational decision-making illuminate interactions between reinforcement learning and declarative memory
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/861d269d112f4b6e8d3363bbd817ae99
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Individual differences in experienced and observational decision-making illuminate interactions between reinforcement learning and declarative memory

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