I have noticed that my pupils seem to be hyperactive when they have drunk soft drinks during break time. I want to know whether consuming soft drinks leads to lower concentration levels in pupils immediately following consumption. Can you design a study that looks at this?
What will be an ideal response?
This question would lend itself to an experimental study. We could randomly assign a group of pupils to an experimental and control condition. We could then design or buy a
test of concentration, and administer that to all pupils before the experiment. The experimental group could then consume a soft drink, the control group might be given a different drink, for example fruit juice. We could then administer the test again, so we have a pre-post test design. This will allow us to both compare the results before and after consumption of the soft drink, and between experimental and control group. Of course, we would have to consider carefully what dosage of soft drink we would consider large enough to have an impact.
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