Water supplementation after dehydration improves judgment and decision-making performance

Article

Thoma, V. and Patsalos, Olivia C. 2020. Water supplementation after dehydration improves judgment and decision-making performance. Psychological Research. 84, p. 1223–1234. https://doi.org/10.1007/s00426-018-1136-y
AuthorsThoma, V. and Patsalos, Olivia C.
Abstract

Previous research has shown that dehydration and water supplementation affect mood and cognitive performance in both adults and children on a variety of tasks that assess memory, attention, executive function, and speeded responses. Given the varied effects of water on cognition, this study explored potential effects of water supplementation, hydration status, and thirst on thinking and decision-making tasks. Twenty-nine adult participants undertook a battery of cognitive tests on two separate occasions after having fasted from the previous night. On one occasion, they were offered 500ml of water to drink prior to testing. Measures of urine osmolality confirmed the group-level effectiveness of the dehydration manipulation. Water supplementation was found to improve performance on tasks measuring cognitive reflection in judgement and decision-making. This increase in performance was associated with differences in tasks implicated in inhibition processes. Drinking water after a 12-hour dehydration period increased performance in judgement and decision-making tasks, and this was not explained by differences in subjective thirst or attentiveness.

JournalPsychological Research
Journal citation84, p. 1223–1234
ISSN0340-0727
Year2020
PublisherSpringer
Accepted author manuscript
File Access Level
Repository staff only
Publisher's version
License
File Access Level
Anyone
Digital Object Identifier (DOI)https://doi.org/10.1007/s00426-018-1136-y
Web address (URL)https://doi.org/10.1007/s00426-018-1136-y
Publication dates
Online21 Jan 2019
Publication process dates
Deposited11 Jan 2019
Accepted10 Dec 2018
Accepted10 Dec 2018
FunderEuropean Hydration Institute
European Hydration Institute
Copyright information© 2019 The authors.
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