W. Revelle*, D. M. Condon, J. Wilt

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter

3 Scopus citations


Caffeine, whether taken in the form of coffee, tea, or soft drink, is a powerful and ubiquitous psychoactive drug that enhances alertness but at the cost of increased tension at higher levels. It facilitates cognitive performance on tasks that require sustained attention, particularly for fatigued participants, but has more complicated effects for complex cognitive tasks. As with many things, moderation is recommended.

Original languageEnglish (US)
Title of host publicationEncyclopedia of Human Behavior
Subtitle of host publicationSecond Edition
PublisherElsevier Inc
Number of pages7
ISBN (Electronic)9780123750006
ISBN (Print)9780080961804
StatePublished - Jan 1 2012


  • Adenosine
  • Alertness
  • Arousal
  • Caffeine
  • Coffee
  • Energetic arousal
  • Guarana
  • Jitteriness
  • Mood enhancement
  • Negative affect
  • Positive affect
  • Psychoactive drug
  • Stimulant
  • Tea
  • Tense arousal
  • Time of day
  • Vigilance

ASJC Scopus subject areas

  • General Psychology


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