A new study showed that caffeine can increase perseverance in people, especially in stressful situations, when performing complex or unsolvable tasks. The results are published in the journal Human Psychopharmacology: Clinical and Experimental.
Caffeine is known for a stimulating effect that contributes to wakefulness and attention. In a new study, a group of scientists conducted a series of experiments, measuring the persistence of the participants when performing difficult tasks in stress conditions, writes РSypost.
“I became interested in the study of caffeine when I realized that its influence on adolescents has been little studied, despite the growth of consumption of energy drinks,” said Sarah Terjen, a professor of psychology at the Amperst College (USA).
The study participated in 329 students. Participants performed difficult tasks: they were looking for objects in the picture and solved the anagrams. Moreover, in the first case, one of the specified items in the picture simply was not – this allowed us to track how long the subjects would not give up.
In the first experiment, they received chewing gum with or without caffeine. The results showed that caffeine did not affect perseverance in these tasks.
In the second experiment, the dosage of caffeine was increased to 100 mg (approximately equivalent to a cup of coffee). Participants who received caffeine spent more time to search for objects, increasing the search duration from 38% to 52% of the total time. However, caffeine did not affect the solving of anagrams.
In the third experiment, the researchers checked how stress affects the effect of caffeine. Participants who were stressed (cold water test) and received caffeine showed great perseverance in the search for objects. On the contrary, among participants without stress caffeine did not increase persistence.
“Caffeine seems to actually affect perseverance, especially in stressful situations,” Terjen says.
Scientists note that perseverance depends on many factors. Caffeine can affect perseverance, reducing fatigue and affecting neurotransmitter systems.
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