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An investigation of the effects of coffee on alertness and performance during the day and night

Smith, A.P, Brockman, P, Flynn, R, Maben, A and Thomas, M (1993) 'An investigation of the effects of coffee on alertness and performance during the day and night.' Neuropsychobiology, 27 (4). pp. 217-233. ISSN 0302-282X

Abstract

An experiment was carried out to examine the effects of coffee on performance and alertness in the day and at night. The results showed that caffeinated coffee had a beneficial effect on alertness and improved performance on a variety of tasks in both day and night sessions. The effects were often very large. For example, at night, consumption of caffeinated coffee produced comparable alertness ratings to the day-time ratings given when juice was drunk. In contrast to the effects of caffeinated coffee, the difference between the decaffeinated coffee and juice were small and variable. Overall, these results clearly demonstrate the beneficial effects of consuming caffeinated coffee, and show that this effect is comparable in the day and night.

Item Type: Article
Keywords: nightwork, caffeine, coffee, alertness, performance efficiency
Subjects: B Philosophy. Psychology. Religion > BF Psychology
G Geography. Anthropology. Recreation > GV Recreation Leisure
Q Science > QP Physiology
R Medicine > R Medicine (General)
R Medicine > RC Internal medicine
R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Divisions: College of Liberal Arts
Date Deposited: 05 Dec 2016 17:00
Last Modified: 05 Dec 2016 17:00
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