Thriller and Sub-Genres

Thriller
"Thriller is a broad genre of literature, film, television, and gaming that includes numerous and often overlapping sub-genres. Thrillers are characterised by fast pacing, frequent action, and resourceful heroes who must thwart the plans of more-powerful and better-equipped villians. Literatery devices such as suspense, red herrings and cliffhangers are used extensively."
http://www.answers.com/topic/thriller-genre

Psychological thriller
"Psychological thriller is a specific sub-genre of the wide-ranging thriller genre. However, this genre often incorporates elements from the mystery genre in addition to the typical traits of the thriller genre. Generally, thrillers focus on plot over character, and thus emphasize intense, physical action over the character's psyche. Psychological thrillers tend to reverse this formula to a certain degree, emphasizing the characters just as much, if not more so, than the plot.
The suspense created by psychological thrillers often comes from two or more characters preying upon one another's minds, either by playing deceptive games with the other or by merely trying to demolish the other's mental state.
Sometimes the suspense comes from within one solitary character where characters must resolve conflicts with their own minds. Usually, this conflict is an effort to understand something that has happened to them. These conflicts are made more vivid with physical expressions of the conflict in the means of either physical manifestations, or physical torsions of the characters at play."
http://www.answers.com/psychological%20thriller

Other websites I have looked at to help with research:
http://www.filmsite.org/thrillerfilms.html
http://en.wikipedia.org/wiki/Thriller_(genre)
http://en.wikipedia.org/wiki/Psychological_thriller