At a networking luncheon I was at last month, they were talking about this. They contacted several of the individuals asking why or why not (stopping). The results were rather interesting, but one thing that they did show (there were cameras on Mr. Bell) was that nearly every child tried to stop and listen/watch Mr. Bell as he played.
I think it interesting that the children saw something different but the majority of the adults didn’t.
The original story on the experiment is a pretty interesting read too.
Or kids don't really care if they're on time or late to their destination.