My ex-T had 2 year post doc training in trauma and dissociation and kept up with the neurobiology, I think. But she had a judgmental edge to her personality or personality defense system. I noticed it early when she talked about an experience with her mother but did not have the social smarts fully to understand that it would be an impediment to my therapy. I had tried so many T's and this one at least had good training and seemed to understand (intellectually) what was going on with me.

So I agree with feileacan. The non-judgmental temperament is important. In addition to training too, probably. 4 sessions per week probably would also help, but I would not have been able to afford that.