The document discusses three audience effects theories:
1) The Hypodermic Needle Model which suggests directors manipulate audiences with loud noises and scenes to provoke reactions. It analyzes jump scenes in the film "The Descent."
2) The Uses and Gratification Model which says audiences choose to watch films they personally enjoy like horror or comedy.
3) The Two-Step Flow Model where hardcore horror fans review films for other potential viewers outside of the film industry perspective.