It’s nearly impossible to imagine a life without coffee nowadays. Drinking a cup after breakfast, before you start your workday or simply the coffee break play a significant part in the daily routine of many people. The main reason that coffee is so popular is that it contains caffeine, a substance that has a stimulating effect on your cognitive skills by making you feel more alert. And as many may have experienced, that’s a welcome treat on many early mornings. On the other hand, consuming too much coffee can lead to negative effects like stress, insomnia or, on a shorter term and probably more relevant to the experiment, problems concentrating.
So if we go a step further, it seems like there is some sort of sweet spot of amount of coffee one can reach to perform optimally on a task. My research question therefore is: Is there a way to predict this sweet spot for at least one desired task?
To tackle this question I will perform an experiment that consists of asking a group of subjects, who differ in gender and age, to solve a puzzle while under the influence of different amounts of coffee, and measuring the average time it takes the subject to complete it. Two important factors to keep in mind during this experiment are that caffeine doesn’t necessarily have the same effect on everyone, and that different tasks require different levels of alertness. These factors will probably make it difficult to come up with a clear conclusion, but it will be definitely interesting to see if I can at least somewhat predict the optimal amounts of coffee.