Agreed that the text is a speech and should have been rewritten a bit as an article. Most of it I found pretty spot on based on other reading I've done. My T incorporated a lot of these approaches way way before there were any brain studies to provide evidence, but never used language like in the examples (I did have a group T who used the hands talking bit.)

I don't know about the left eye/right eye contact; but my mother had strokes, and over the years I talked with a lot of neurologists, and more than one told me about the methods they used to diagnose area of injury and evaluate progression of cell death. One of the ways was to cover each eye sequentially while showing pics of common objects. The patient's answers could differ depending upon which eye were covered, and that would indicate which area of the brain was impacted. Now how that translates to conversational observation, I don't know. I think it's likely the T is observing not simply the eye, but the area around the eye. We know faces are not symmetrical, even when they appear to be when viewed casually because when they photographically double the image of each half of the face, the result does not look normal. So I would wonder if the T were unavoidably seeing and registering expression signs around the eye that may be different for each side based upon the brain connection.

ETA: Someone, the gazing left or right is part of Neuro Linguistic Programming (NLP). It doesn't predict 100%, but it's strong enough to be used as a factor by law enforcement in interrogations. Whether it can be effectively used as a re-programming tool for trauma, I don't know. I suspect some of EMDR is connected to NLP.