Related Experiment Video
Updated: Aug 17, 2026

A Method for Manipulating Blood Glucose and Measuring Resulting Changes in Cognitive Accessibility of Target Stimuli
Published on: August 12, 2016
Glucose improves attention and reaction to frustration in children
Abstract:
There have been many suggestions that both dietary sugar and the level of blood glucose may be associated with abnormal behaviour. To examine this question 60 six- and seven-year old children were given a drink that contained either 25 grams of glucose or a placebo towards the end of the school day. They were then subjected to one test that required sustained attention and to a second that was intentionally frustrating. Those given the drink containing glucose were more capable of sustaining attention and showed fewer signs of frustration.
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