Traits, Codes and Conventions of Horror Genre

I have done some research into the key conventions of horror films, this will help me have a understanding in what I will need to add into my opening to make it fit with the horror genre and make it successful.

Traditional traits of horror films; 

• Characters are fearless. They don't think about the danger they may face. 
• Power&phone lines are cut, they don't have these basic necessities.
• Strange noises are heard.
•  Either set in the night or in a dark place. 
•  Bad weather conditions e.g stormy or cold night. 

I research 3 main codes these are; Symbolic, Technical and Written