REACTIONS WHILE WATCHING IN THE CINEMA

I found this video where it explains one experiment that was created. They explain the steps which as the movie is playing and each audience sits to watch this movie, each viewer is asked to write down their mobile number. Although the audience aren't expecting anything to happen, once the scene of the actress comes along the actress holds the phone and in the audience only one person is chosen as their phone rings. They answer and so does the actress making the chosen viewer feel frightened. Watch and see!