Who Is Helped By Directive Hypnosis?

Directive hypnosis seems to work well not only for individuals but for groups as well. For example, there is the story of two basketball teams, one of which practiced physically, on the court. The other team met with the coach and visualized performing every play perfectly. Although they did not practice physically, they continued this hypnosis technique over and over. When the latter team played the former, the team that had practiced directive hypnosis won.