Mental arithmetic became easier after volunteers had been given large amounts of compounds found in chocolate, called flavanols, in a hot cocoa drink.
They were also less likely to feel tired or mentally drained, the findings, presented at the British Psychological Society annual conference in Brighton show.
Prof David Kennedy, director of the brain, performance and nutrition research centre at Northumbria University, and a co-author of the study, said that chocolate could be beneficial for mentally challenging tasks.
The findings suggest students who binge on chocolate when revising for exams may gain a real benefit from doing so.
“For things that are difficult to do, mentally demanding things that maybe crop up in your work it could help,” Prof Kennedy said.
The flavanols, part of a group of chemicals called polyphenols, work by increasing the flow…
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