When I was leaving University, there were still occasional thoughts rattling around my brain about doing a Msc or Phd. Trouble was, I couldn't really find a research project of any value. Well, it turns out you really don't need to.
I'd love to read the paper this comes from, because it sounds like absolute nonsense. Of course, you can never rule anything out, but I remain dubious that you can make any real assumptions about someone's personality based on a few concentric rings of muscle. If you could, proctologists and psychotherapists would be the same thing.