A scientific study has finally worked out the scariest movie of all time.

The Science of Scare study, now in its fourth year, tracks the heart rate of volunteers as they watch horror movies to calculate which has the biggest impact.

Whilst the “science” behind the study might be debatable, it does provide a fascinating insight into the films which have the biggest impact on viewers.

The Science of Scare study takes 250 volunteers and measures their heart rate and heart variance which…