Investigation of the Effects of Coffee on Alertness and Performance during the Day and Night

Smith, Andrew P.; Brockman, P.; Flynn, Robert; Maben, Andrea; Thomas, Marie

doi:10.1159/000118984

Cited by 87 publications

(66 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Jarvis (1993) found significant improvements in simple reaction time, choice reaction time, incidental verbal memory and Visio-spatial reasoning after the intake of coffee. Similarly, Smith et al (1993) found significant effects of intake of coffee on alertness and performance. Various studies also targeted the use of a computer in mood regulation and the improvement of performance.…”

Section: Moods and Emotionsmentioning

confidence: 83%

Do moods affect programmers’ debug performance?

2010

View full text Add to dashboard Cite

There is much research that shows people's mood can affect their activities. This paper argues that this also applies to programmers, especially their debugging. Literature-based framework is presented linking programming with various cognitive activities as well as linking cognitive activities with moods. Further, the effect of mood on debugging was tested in two experiments. In the first experiment, programmers (n = 72) saw short movie clips selected for their ability to provoke specific moods. Afterward, they completed a debugging test. Results showed the video clips had a significant effect on programmers' debugging performance; especially, there was a significant difference after watching low-and high-arousalevoking video clips. In the second experiment, programmers' mood was manipulated by asking participants (n = 19) to dry run algorithms for at least 16 min. They performed some physical exercises before continuing dry running algorithms again. The results showed a significant increase in arousal and valence that coincided with an improvement in programmers' task performance after the physical exercises. Together, this suggests that programmers' moods influence some programming tasks such as debugging.

show abstract

Section: Moods and Emotionsmentioning

confidence: 83%

Do moods affect programmers’ debug performance?

2010

View full text Add to dashboard Cite

show abstract

“…Caffeine was found to either (1) exert no effects on free recall performance in sixteen studies [7][8][9]11,[21][22][23][24][25][26][27][28][29][30][31][32]; (2) improve recall in six studies [33][34][35][36][37][38]; or (3) impair recall in three studies [8,12,39].…”

Section: Short Term Memorymentioning

confidence: 99%

Is Caffeine a Cognitive Enhancer?

Nehlig

2010

JAD

304

252

View full text Add to dashboard Cite

Abstract. The effects of caffeine on cognition were reviewed based on the large body of literature available on the topic. Caffeine does not usually affect performance in learning and memory tasks, although caffeine may occasionally have facilitatory or inhibitory effects on memory and learning. Caffeine facilitates learning in tasks in which information is presented passively; in tasks in which material is learned intentionally, caffeine has no effect. Caffeine facilitates performance in tasks involving working memory to a limited extent, but hinders performance in tasks that heavily depend on working memory, and caffeine appears to rather improve memory performance under suboptimal alertness conditions. Most studies, however, found improvements in reaction time. The ingestion of caffeine does not seem to affect long-term memory. At low doses, caffeine improves hedonic tone and reduces anxiety, while at high doses, there is an increase in tense arousal, including anxiety, nervousness, jitteriness. The larger improvement of performance in fatigued subjects confirms that caffeine is a mild stimulant. Caffeine has also been reported to prevent cognitive decline in healthy subjects but the results of the studies are heterogeneous, some finding no age-related effect while others reported effects only in one sex and mainly in the oldest population. In conclusion, it appears that caffeine cannot be considered a 'pure' cognitive enhancer. The indirect action of caffeine on arousal, mood and concentration contributes in large part to its cognitive enhancing properties.

show abstract

“…Convergent studies have shown the positive effects of caffeine on alertness and performance during daytime as well as during night time [46][47][48][49] . These effects can be felt as soon as a moderate amount of caffeine (between 2 and 4 mg/kg) is taken, whatever its shape (coffee, tea or energy drink) 50) .…”

Section: Intake Of Natural or Pharmacological Substancesmentioning

confidence: 99%

A Critical Review of Techniques Aiming at Enhancing and Sustaining Worker's Alertness during the Night Shift

et al. 2004

View full text Add to dashboard Cite

Two types of methods based on a particular principle allow enhancing and sustaining workers' alertness all along their night work. The first one rather consists in arousing workers by exposing them to stimulant environment conditions (light or noise…) or by giving them natural or pharmacological reactivating substances (caffeine or amphetamines…) for example. The second principle consists in increasing workers' possibilities for resting and allowing them to have short sleep periods or Short Rest Periods (SRP) in an adapted area at the workplace. In order to use these techniques in real work situations, after a critical review taking into account both efficiency, advantages and disadvantages but also applicability and acceptability, the SRP technique stands out as the most efficient method as it has a certain number of advantages with regard to our initial objective.

show abstract

Investigation of the Effects of Coffee on Alertness and Performance during the Day and Night

Cited by 87 publications

References 5 publications

Do moods affect programmers’ debug performance?

Do moods affect programmers’ debug performance?

Is Caffeine a Cognitive Enhancer?

A Critical Review of Techniques Aiming at Enhancing and Sustaining Worker's Alertness during the Night Shift

Contact Info

Product

Resources

About