Effects of caffeine on human behavior

  • Published: Toxicology 40 (9): 1243–55. doi:10.1016/S0278-6915(02)00096-0. PMID 12204388 (2002)
  • Authors: Smith, A
  • Date Added: 29 Dec 2013
  • Last Update: 29 Dec 2013
  • Format: pdf


Identify the effects of caffeine on behaviour.


Literature review.

Key Findings:

  • The evidence clearly shows that levels of caffeine consumed by most people have largely positive effects on behaviour.

  • Excessive consumption can lead to problems, especially in sensitive individuals.


Caffeine, behaviour, alertness, fatigue, arousal situation, vigilance


This review concludes that research has demonstrated the benefits of caffeine consumption on driving performance. However there are also some negative effects and drivers need to be cautious about their levels of consumption.