jerome is a professional tennis player and is working on his speed. His friend gives him an herbal medicine that he swears will improve his performance. jerome takes the medicine for a few days and finds that he is performing better. later, it is found that medicine was only sugar and basil leaves. what might explain jeromes improved performace ? 1-the testing efect 2- the sugar and basil. 3- the placebo effect. 4- the experimental effect