Expectation of having consumed caffeine can improve performance and mood
Article
Dawkins, L., Shahzad, Fatima-Zahra, Ahmed, Suada S. and Edmonds, C. 2011. Expectation of having consumed caffeine can improve performance and mood. Appetite. 57 (3), pp. 597-600.
| Authors | Dawkins, L., Shahzad, Fatima-Zahra, Ahmed, Suada S. and Edmonds, C. |
|---|---|
| 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. |
| Keywords | caffeine; mood; expectancy; performance |
| Journal | Appetite |
| Journal citation | 57 (3), pp. 597-600 |
| Year | 2011 |
| Accepted author manuscript | License CC BY-ND |
| Web address (URL) | http://hdl.handle.net/10552/1347 |
| Publication dates | |
| 29 Jul 2011 | |
| Publication process dates | |
| Deposited | 18 Nov 2011 |
| Additional information | Citation: |
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Accepted author manuscript
| Dawkins_2011b.pdf.pdf | |
| License: CC BY-ND |
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