The University of East London, a national university in the United Kingdom, argues: In the first place, I'm wondering if drinking water is allowed during the test in Japan, but anyway, what exactly does that mean?
The university's research team grouped 447 students taking the exam according to "with / without drinking water brought in" and "type of drinking water brought in." Then, it seems that the higher the grade of the students, the more they are assigned to "bring in drinking water". In addition, students who drank water during the exam scored better than those who did not.
Dr. Chris Pawson, Ph.D., who led the experiment, explains why drinking water increases the score of the exam:
"Drinking water may physiologically affect the" thinking function "and improve test results, and may also help relieve anxiety felt during the test."