Age ratings for a psychological thriller

psychological thrillers are normally based around the ages of 15+, and it is a sub genre therefore there is  more of a niche audience.

The age rating for this film is 15+, and the reason for this is because the content of this film is not disturbing enough for a higher rating, also there is no sexual content.

I have also researched what is actually portrayed within a 15+ film, and what is suitable.