The concentration of a chemical in the air that is released by people when stressed is an objective indicator for setting the age rating of films, finds a new study. The more nervous moviegoers are, the more isoprene they emit - a measurable indication of how stressful a film is.

The concentration of a chemical in the air that is released by people when stressed is an objective indicator for setting the age rating of films, finds a new study. The more nervous moviegoers are, the more isoprene they emit - a measurable indication of how stressful a film is.: https://ift.tt/2PSFRuy Read more... https://ift.tt/2OJOz1R