Water consumption, not expectancies about water consumption, affects cognitive performance in adults
Article
Edmonds, C., Crombie, Rosanna, Baillieux, Haiko, Gardner, Mark R and Dawkins, L. 2013. Water consumption, not expectancies about water consumption, affects cognitive performance in adults. Appetite. 60, pp. 148-153.
| Authors | Edmonds, C., Crombie, Rosanna, Baillieux, Haiko, Gardner, Mark R and Dawkins, L. |
|---|---|
| Abstract | Research has shown that water supplementation positively affects cognitive performance in children and adults. The present study considered whether this could be a result of expectancies that individuals have about the effects of water on cognition. Forty seven participants were recruited and told the study was examining the effects of repeated testing on cognitive performance. They were assigned either to a condition in which positive expectancies about the effects of drinking water were induced, or a control condition in which no expectancies were induced. Within these groups, approximately half were given a drink of water, while the remainder were not. Performance on a thirst scale, letter cancellation, digit span forwards and backwards and a simple reaction time task was assessed at baseline (before the drink) and 20 minutes and 40 minutes after water consumption. Effects of water, but not expectancy, were found on subjective thirst ratings and letter cancellation task performance, but not on digit span or reaction time. This suggests that water consumption effects on letter cancellation are due to the physiological effects of water, rather than expectancies about the effects of drinking water. |
| Keywords | hydration; expectancy; cognitive performance |
| Journal | Appetite |
| Journal citation | 60, pp. 148-153 |
| ISSN | 0195-6663 |
| Year | 2013 |
| Publisher | Elsevier |
| Accepted author manuscript | |
| Accepted author manuscript | |
| Accepted author manuscript | |
| Web address (URL) | http://www.sciencedirect.com/science/article/pii/S0195666312004321 |
| Publication dates | |
| 01 Jan 2013 | |
| Publication process dates | |
| Deposited | 01 Nov 2012 |
| Copyright information | NOTICE: this is the author’s version of a work that was accepted for publication in Appetite. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was published in Appetite, DOI:10.1016/j.appet.2012.10.016 |
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