Expectation of having consumed caffeine can improve performance and mood
Journal article
Dawkins, L., Shahzad, F.-Z., Ahmed, S.S and Edmonds, C.J. (2011). Expectation of having consumed caffeine can improve performance and mood. Appetite. 57, pp. 597-600. https://doi.org/10.1016/j.appet.2011.07.011
| Authors | Dawkins, L., Shahzad, F.-Z., Ahmed, S.S and Edmonds, C.J. |
|---|---|
| Abstract | We explored whether caffeine, and expectation of having consumed caffeine, affects attention, reward responsivity and mood using double-blinded methodology. 88 participants were randomly allocated to ?drink-type? (caffeinated/decaffeinated coffee) and ?expectancy? (told caffeinated/told decaffeinated coffee) manipulations. Both caffeine and expectation of having consumed caffeine improved attention and psychomotor speed. Expectation enhanced self-reported vigour and reward responsivity. Self-reported depression increased at post-drink for all participants, but less in those receiving or expecting caffeine. These results suggest caffeine expectation can affect mood and performance but do not support a synergistic effect. |
| Year | 2011 |
| Journal | Appetite |
| Journal citation | 57, pp. 597-600 |
| Publisher | Elsevier |
| Digital Object Identifier (DOI) | https://doi.org/10.1016/j.appet.2011.07.011 |
| Web address (URL) | http://roar.uel.ac.uk/1347/ |
| Publication dates | |
| 29 Jul 2011 | |
| Publication process dates | |
| Accepted | 22 Jul 2011 |
| Deposited | 27 Jul 2021 |
| Accepted author manuscript | License File Access Level Open |
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