The answer is All her clothes were thin and floating
1. When Macbeth moved to Inverness, you can already see his influence from his entrance. The second act centered around his influence. Even though there were other characters in the story, Macbeth continued to influence everyone in the scene.
2. Symbolically, Macbeth's entrance had darkened the atmosphere. His entrance brought darkness and gloominess. The brooding darkness was intensified in the battle scene Banquo and his assassin.
No, it does not according to the study. the study states it is just a placebo effect (it works because you expect it to.)