Intriguing article that speaks to the fact that we often don't know how others perceive us and that misconception can impact how we lead and manage. I do not necessarily agree with everything in it.
Also, be sure and read the comments. I found myself trying to match the DiSC profile with each commenter.-)
Years ago, when I was a young middle manager who officed in our corporate office, I had a respected supervisor who was not in my chain of command pull me into an office. She said, "You know, Glenn, when you walk through the hallways, you never greet people. You have your head down and you just walk by without saying anything." She perceived that as poor manners. And she was right.
My paradigm immediately shifted and now, I make it a point to greet everyone I encounter with a smile and a verbal greeting. It's more fun. I also make it a point to greet my staff each morning per the recent podcast.