After combing through movie lists from IMDB to Reddit, I think I've created the most complete collection of horror movies that climb inside your skull and mess with your brains.
'Beginner's Guide: Psychological Horror' -- http://tinyurl.com/j2ygg5w
'What Exactly Is a "Psychological" Horror Film?' -- http://tinyurl.com/jlp59ue
'Why We Crave Horror Movies' by Stephen King -- http://tinyurl.com/pm5amx5
'Common Themes in Psychological Thrillers' -- http://tinyurl.com/hqgtwu5
'Psychological Horror in the Films of David Lynch' -- http://tinyurl.com/glgmpym
The 21st Century’s Most Acclaimed Films (including films from 2000!)
9th edition (March 2016)
List curated by Bill Georgaris on They Shoot Pictures, Don't They?
/u/StopReadinMyUsername on reddit combined the average ratings (Critic's & Users) from IMDb, Rotten Tomatoes, Metacritic and Letterboxd, and then weighted and tweaked the results with general film data from iCheckMovies and IMDb to reveal the 1001 Greatest Movies of All Time.