I am a huge fan of this idea, more so on an intellectual level more so than performing the effect.
Docc Hilford was (to my knowledge the first) person to create the effect and his is still one of the best.
Derren has a few in his books based on a similar ideas to Docc's and his invisible deal and invisible deal force are quite a different approach.
Richard Osterlind has a very nice idea that extends the idea for multiple cards (Docc uses this idea aswell).
Daniel Madison has a many ideas in his book Psycho.
Bryn Reyonlds in the Safwan Papers has a very nice idea that can force a range of cards.
Joshua Quinn has one of the nicest approaches to using equivoke to force a card.
David Berglas in his latest book has one of the best approaches using an actual deck of cards
Whilst I said I love the idea of the effect I personally never use them in performance because there is a lot to go through for a fairly simple effect. Yes it is a completely 'free' choice of the card they think of however if it is routined correctly a simple peek or key cards can be much more effective to the audience.
I've been running through Expert Card Technique lately and I found a couple. They require the spectator to look at the cards though, they aren't completely mental in that sense.
Dai Vernon's Mental Force Pg. 271
Ultima Thule Location Pg. 331
The Psychic Stop Pg. 330
They're not exactly psychological forces but they use psychological principles to force a card