Heightened effort discounting is a common feature of both apathy and fatigue

Abstract Apathy and fatigue have distinct aetiologies, yet can manifest in phenotypically similar ways. In particular, each can give rise to diminished goal-directed behaviour, which is often cited as a key characteristic of both traits. An important issue therefore is whether currently available ap...

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Autores principales:	Mindaugas Jurgelis, Wei Binh Chong, Kelly J. Atkins, Patrick S. Cooper, James P. Coxon, Trevor T.-J. Chong
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7d17a412004b433fb5b3218dea1b1360
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spelling	oai:doaj.org-article:7d17a412004b433fb5b3218dea1b13602021-11-21T12:18:31ZHeightened effort discounting is a common feature of both apathy and fatigue10.1038/s41598-021-01287-22045-2322https://doaj.org/article/7d17a412004b433fb5b3218dea1b13602021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01287-2https://doaj.org/toc/2045-2322Abstract Apathy and fatigue have distinct aetiologies, yet can manifest in phenotypically similar ways. In particular, each can give rise to diminished goal-directed behaviour, which is often cited as a key characteristic of both traits. An important issue therefore is whether currently available approaches are capable of distinguishing between them. Here, we examined the relationship between commonly administered inventories of apathy and fatigue, and a measure of goal-directed activity that assesses the motivation to engage in effortful behaviour. 103 healthy adults completed self-report inventories on apathy (the Dimensional Apathy Scale), and fatigue (the Multidimensional Fatigue Inventory, and/or Modified Fatigue Impact Scale). In addition, all participants performed an effort discounting task, in which they made choices about their willingness to engage in physically effortful activity. Importantly, self-report ratings of apathy and fatigue were strongly correlated, suggesting that these inventories were insensitive to the fundamental differences between the two traits. Furthermore, greater effort discounting was strongly associated with higher ratings across all inventories, suggesting that a common feature of both traits is a lower motivation to engage in effortful behaviour. These results have significant implications for the assessment of both apathy and fatigue, particularly in clinical groups in which they commonly co-exist.Mindaugas JurgelisWei Binh ChongKelly J. AtkinsPatrick S. CooperJames P. CoxonTrevor T.-J. ChongNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Mindaugas Jurgelis Wei Binh Chong Kelly J. Atkins Patrick S. Cooper James P. Coxon Trevor T.-J. Chong Heightened effort discounting is a common feature of both apathy and fatigue
description	Abstract Apathy and fatigue have distinct aetiologies, yet can manifest in phenotypically similar ways. In particular, each can give rise to diminished goal-directed behaviour, which is often cited as a key characteristic of both traits. An important issue therefore is whether currently available approaches are capable of distinguishing between them. Here, we examined the relationship between commonly administered inventories of apathy and fatigue, and a measure of goal-directed activity that assesses the motivation to engage in effortful behaviour. 103 healthy adults completed self-report inventories on apathy (the Dimensional Apathy Scale), and fatigue (the Multidimensional Fatigue Inventory, and/or Modified Fatigue Impact Scale). In addition, all participants performed an effort discounting task, in which they made choices about their willingness to engage in physically effortful activity. Importantly, self-report ratings of apathy and fatigue were strongly correlated, suggesting that these inventories were insensitive to the fundamental differences between the two traits. Furthermore, greater effort discounting was strongly associated with higher ratings across all inventories, suggesting that a common feature of both traits is a lower motivation to engage in effortful behaviour. These results have significant implications for the assessment of both apathy and fatigue, particularly in clinical groups in which they commonly co-exist.
format	article
author	Mindaugas Jurgelis Wei Binh Chong Kelly J. Atkins Patrick S. Cooper James P. Coxon Trevor T.-J. Chong
author_facet	Mindaugas Jurgelis Wei Binh Chong Kelly J. Atkins Patrick S. Cooper James P. Coxon Trevor T.-J. Chong
author_sort	Mindaugas Jurgelis
title	Heightened effort discounting is a common feature of both apathy and fatigue
title_short	Heightened effort discounting is a common feature of both apathy and fatigue
title_full	Heightened effort discounting is a common feature of both apathy and fatigue
title_fullStr	Heightened effort discounting is a common feature of both apathy and fatigue
title_full_unstemmed	Heightened effort discounting is a common feature of both apathy and fatigue
title_sort	heightened effort discounting is a common feature of both apathy and fatigue
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/7d17a412004b433fb5b3218dea1b1360
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Heightened effort discounting is a common feature of both apathy and fatigue

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