an effect large enough to be apparent just from plotting And how large is that? Without putting a number on it, how do we come to the conclusion that the e

an effect large enough to be apparent just from plotting And how large is that? Without putting a number on it, how do we come to the conclusion that the effect is not large enough? That it didn't show in their sample of data points could have been just random chance. But before we take the measured effects at face value, I think it's important think about them more. They report significant p values of their success in predicting if the capsule holds Theanine and also for the effect of the capsule when it holds Theanine. Both negative correlations. My first thought reading this is that the Placebo tasted more like Theanine and thinking they took Theanine had a positive effect on the outcome.