an electronic board that told the medical staff how well they were doing. Every time you washed your hands, the numbers went up on the screen and it showed you your rate of your current shift and the rate of the weekly staff. And what happened? Boom. Compliance raised to 90%, which is absolutely amazing. And the research staff were amazed as well, and they made sure to replicate it in another division in the hospital. Again, the same results. So, why does this intervention work so well? It works well because, instead of using warnings