This would work nicely in Icar. In Icar, every character has a Deviant, which is a wheel of personality traits. It's used as a guide to help the player deal with situations coherently. If you've played Pendragon, it's a lot like that.
Setting this wheel at the start can be hard. I normally say to choose a few important ones, make them strong and fill all the rest in as medium. Having pictures with multiple choice answers could be used to fill this in.
For example, if the picture was:

How does this make you feel?
A. Happy
B. Angry
C. Sad
D. Indifferent
Then from that, you can build up a graph of what the answers do to the Deviant wheel. If they chose A, put +1 into Loving. If they chose B, put +1 into Firey. etc. I wouldn't put it into the main rules but it would be good for a module.