Evaluation of emotional stress in the cinema. Free Technical Library News

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Assessment of emotional stress in the cinema

29.10.2018

Researchers at the Chemical Institute of the Max Planck Society have come up with a chemically objective way to give films an age rating. They measured the composition of the air during 135 screenings of eleven different films; the total number of spectators was over 13 thousand people. A special chemical analysis device was installed in the ventilation system of the cinema hall to take air samples every 30 seconds. The authors of the work paid special attention to volatile organic substances, comparing their level with the genre of the film and the age of the audience.

It turned out that the emotional stress experienced by the audience while watching the film corresponds to the level of isoprene. It is best known as a natural rubber monomer and one of the products of petroleum refining. However, isoprene is also formed in our bodies during metabolism, accumulating in the muscles and escaping through the skin and lungs when our muscles work. If we watch something that makes us nervous, we start to change position, fidget, grab onto the armrests, etc. - and because of such muscular effort, isoprene flies into the atmosphere of the cinema hall.

Accordingly, the emotional impact on children and adolescents is quite easy to assess by the level of isoprene. This method can be used in controversial cases, when it is not very clear how exactly the children will react to the film.

The researchers emphasize that we are talking about psychological stress. They would also like to find out what other emotional states can be caught in a similar chemical way - after all, the air was analyzed for sixty compounds, and it is quite possible that among them there are some chemical signs of calm sadness or, say, fun. But here it is already necessary not only to catch the air in the cinema hall, but to arrange a carefully controlled laboratory experiment.

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