Caffeine's overwhelming popularity as a stimulant is merited, according to a study that looked at its effects on proofreading.
The study, published in the Journal of Experimental Psychology: Applied, examined two groups of college students, one where individuals consumed half a cup of coffee a day (about 50 milligrams (mg) of caffeine) on average and the other where they averaged about three cups a day (roughly 300mg).
"Caffeine has become the most prevalently consumed psychostimulant in the world, but its influences on daily real-world functioning are relatively unknown," the researchers wrote.
Individuals in the first experimental group were randomly given pills that contained 0mg, 100mg, 200mg or 400mg of caffeine. After 45 minutes, they were asked to edit a one page news story in five minutes that contained various spelling and grammar mistakes.