| Another option for the use of such a system might be exposure therapy. Very generally, exposure therapy is gradual exposure to stimuli that a person fears or finds unpleasant (disgusting) so that a learned emotional response (e.g. fear of something) can be extinguished.
There would be a potential application for this in, say, a "Dungeon of Terror", designed somewhat like the old school dungeons. I'm using D&D as an example here, but please don't take that to mean that D&D is the system I'd decide upon for the actual dissertation.
The dungeon would be designed with multiple levels, the further down one travels, the more intense the facing of the fear is. | 
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