The Kiplinger article reference was an eye opener. I would like to make a comment on the perceived speakers ability. It would be nice if all of us have compassion and empathy, that is not always the case and in many cases not by choice.
What I am referring to is people with disabilities sometimes have a hard time with understanding signs, clues and space bariers during conversations. It can be frustrating and even feel annoying. Please remind your readers to take this in account when they are confronted and in this position.

It has also been shown that unnurtured children will grow up not being able to understand social ques of effective communication similar to the ones I mentioned above. That is why it is crucial to provide love and compassion during their early years.

Well thanks for your time and you can read more of my ramblings
at http://www.bontemedical.com/blog

All the best
Tony