 That was the thing we found in this study, which is that the adults went with their kids and they stood on the sidewalk and made sure that the kids performed. So that there would be a mom standing on the sidewalk, calling out to the four-year-old, don't forget to say trick-or-treat and thank you. And then the kid would go to the door and say trick-or-treat and leave saying thank you. Adults really enforce this.