Risk aversion in the adjustment of speed-accuracy tradeoff depending on time constraints

Abstract Humans are often required to make decisions under time constraints and to adjust speed-accuracy tradeoff (SAT) based on time constraints. Previous studies have investigated how humans adjust SAT depending on the time discount rate of expected gain. Although the expected gain of actions can...

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Autores principales:	Ryoji Onagawa, Masahiro Shinya, Keiji Ota, Kazutoshi Kudo
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ba9ec8d3b26b4d448e144974388635db
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spelling	oai:doaj.org-article:ba9ec8d3b26b4d448e144974388635db2021-12-02T16:08:04ZRisk aversion in the adjustment of speed-accuracy tradeoff depending on time constraints10.1038/s41598-019-48052-02045-2322https://doaj.org/article/ba9ec8d3b26b4d448e144974388635db2019-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-48052-0https://doaj.org/toc/2045-2322Abstract Humans are often required to make decisions under time constraints and to adjust speed-accuracy tradeoff (SAT) based on time constraints. Previous studies have investigated how humans adjust SAT depending on the time discount rate of expected gain. Although the expected gain of actions can be determined by both gain and probability, only situations where gain decreases over time have been tested. Considering the effect of risk on decision-making, the difference in time discount factors may modulate the response strategies for SAT, since temporal changes in variance of possible outcomes differ when gain or probability decreases over time. Here, we investigated the response strategies for SAT under different time discount factors. Participants were required to select one of the two options with different initial values in situations where the expected gain of options declined over time by a linear decrease in gain or probability. Comparison of response strategies between conditions revealed that response times in the gain condition were longer than those in the probability condition, possibly due to risk-aversion. These findings indicate the existence of common rules underpinning sensorimotor and economic decision-making.Ryoji OnagawaMasahiro ShinyaKeiji OtaKazutoshi KudoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-12 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ryoji Onagawa Masahiro Shinya Keiji Ota Kazutoshi Kudo Risk aversion in the adjustment of speed-accuracy tradeoff depending on time constraints
description	Abstract Humans are often required to make decisions under time constraints and to adjust speed-accuracy tradeoff (SAT) based on time constraints. Previous studies have investigated how humans adjust SAT depending on the time discount rate of expected gain. Although the expected gain of actions can be determined by both gain and probability, only situations where gain decreases over time have been tested. Considering the effect of risk on decision-making, the difference in time discount factors may modulate the response strategies for SAT, since temporal changes in variance of possible outcomes differ when gain or probability decreases over time. Here, we investigated the response strategies for SAT under different time discount factors. Participants were required to select one of the two options with different initial values in situations where the expected gain of options declined over time by a linear decrease in gain or probability. Comparison of response strategies between conditions revealed that response times in the gain condition were longer than those in the probability condition, possibly due to risk-aversion. These findings indicate the existence of common rules underpinning sensorimotor and economic decision-making.
format	article
author	Ryoji Onagawa Masahiro Shinya Keiji Ota Kazutoshi Kudo
author_facet	Ryoji Onagawa Masahiro Shinya Keiji Ota Kazutoshi Kudo
author_sort	Ryoji Onagawa
title	Risk aversion in the adjustment of speed-accuracy tradeoff depending on time constraints
title_short	Risk aversion in the adjustment of speed-accuracy tradeoff depending on time constraints
title_full	Risk aversion in the adjustment of speed-accuracy tradeoff depending on time constraints
title_fullStr	Risk aversion in the adjustment of speed-accuracy tradeoff depending on time constraints
title_full_unstemmed	Risk aversion in the adjustment of speed-accuracy tradeoff depending on time constraints
title_sort	risk aversion in the adjustment of speed-accuracy tradeoff depending on time constraints
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/ba9ec8d3b26b4d448e144974388635db
work_keys_str_mv	AT ryojionagawa riskaversionintheadjustmentofspeedaccuracytradeoffdependingontimeconstraints AT masahiroshinya riskaversionintheadjustmentofspeedaccuracytradeoffdependingontimeconstraints AT keijiota riskaversionintheadjustmentofspeedaccuracytradeoffdependingontimeconstraints AT kazutoshikudo riskaversionintheadjustmentofspeedaccuracytradeoffdependingontimeconstraints
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Risk aversion in the adjustment of speed-accuracy tradeoff depending on time constraints

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