The experiment answers a useful question: does theanine have a strong, acute anti-stress effect on the experimenter? Effect size is the key element of this que

The experiment answers a useful question: does theanine have a strong, acute anti-stress effect on the experimenter? Effect size is the key element of this question. If the substance was alprazolam (Xanax) instead of theanine, we would almost certainly see a strong effect here. The same would be true for heroin, ethanol, or cocaine. It's not trying to test whether there might be a strong effect for most people or whether there are any side effects. Other experiments have been done with theanine seeking to answer those questions; the answers appear to be no and no.