Effects of caffeine on cognitive performance, mood and alertness: a systematic review
McLellan TM, Caldwell JA, Lieberman HR
Published in Neuroscience and Biobehavioral Reviews
Methodology
Systematic review of controlled trials of caffeine on vigilance, reaction time, mood and cognitive throughput in healthy adults.
Key Findings
Caffeine consistently improved reaction time and vigilance, with the largest effects during fatigue or sleep restriction.
Conclusions
Caffeine reliably increases processing speed and alertness under fatigue.
Limitations
Habituation and withdrawal reversal may inflate effects.
Outcomes Measured
Caffeine consistently improved reaction time and vigilance, with the largest effects during fatigue or sleep restriction
Caffeine consistently improved reaction time and vigilance, with the largest effects during fatigue or sleep restriction
Study Details
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