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Water voor betere leerprestaties*
Uit een kleine Engelse studie blijkt dat studenten die tijdens examens water drinken betere resultaten behalen dan zij die dat niet doen. De onderzoekers bestudeerden 447 studenten, zowel oude als nieuwe. De ouderen namen op zich al vaker water mee naar het examen. De oudere studenten die water dronken bleken gemiddeld 5% beter te scoren dan zij die geen water dronken. Bij de jongere studenten was de betere score zelfs 10%. 
Volgens de onderzoekers heeft water drinken een psychologische effect op denkfuncties en helpt het om je scores te verbeteren. Bovendien kan het angsten verlichten, waarvan bekend is dat ze juist een negatief effect hebben op schoolprestaties. 
Bring water into exams to improve your grade
Students who bring water into exams may improve their grade by keeping hydrated.
That is the finding of a study conducted by Chris Pawson from the University of East London and his collaborators Sarah Doherty, Laura Martin, Ruth Soares and Caroline Edmonds from the University of East London and Mark Gardner from the University of Westminster. Their findings were presented at this week’s British Psychological Society Annual Conference, held in London.
The researchers recorded the behaviour of 447 undergraduate students across three different cohorts in relation to whether students brought drinks, and the type of drinks they brought, into exams. Students who were in higher levels of the university degree were much more likely to bring drinks into the exam that those in their first year of undergraduate study.
The researchers related the marks attained by students in the exam to whether those students brought water into the exam. Importantly, they controlled for general ability using coursework marks to ensure that they were not simply assessing the possibility that more able students were more likely to bring water into the exam. The results showed that those who took water into the exam, and presumably consumed the water, did better in the exam than those who did not.
Dr Pawson said: “The results imply that the simple act of bringing water into an exam was linked to an improvement in students’ grades. There are several physiological and psychological reasons that might explain this improvement with water consumption.”
Dr Pawson raised the possibility that water consumption may have a physiological effect on thinking functions that result in improved exam performance. He also proposed the possibility that consuming water may alleviate anxiety, which is known to have a negative effect on exam performance.
Dr Pawson said: “Future research is needed to tease apart these explanations, but whatever the explanation, it is clear that students should endeavour to stay hydrated with water during exams.”
These findings could have implications on policy for access to drinks during examinations at all levels of education. They also suggest that information about the importance of keeping hydrated should be targeted at first-year undergraduate students who are less likely to bring drinks into exams.
Notes to Editors
The University of East London (UEL) is a global learning community with over 28,000 students from over 120 countries world-wide. Our vision is to achieve recognition, both nationally and internationally, as a successful and inclusive regional university proud of its diversity, committed to new modes of learning which focus on students and enhance their employability, and renowned for our contribution to social, cultural and economic development, especially through our research and scholarship. We have a strong track-record in widening participation and working with industry. (April 2012)