There are a number of conditions that cause people to have a hard time understanding nonverbal communication. These include, but are not limited to Asperger's Syndrome and High Functioning Autism. Beyond having difficulty communicating, it can lead to confusing social signals because some of this communication is signaling social status.
What if you didn't understand ninety percent of the conversation? What if your loved ones didn't know you were communicating ninety percent of the time?
It turns out that if a person with a Nonverbal Learning Disability (or NLD) can be greatly helped to learn to better communicate if those around them are aware of their disability
I wrote a book for my son who we suspect, like me, has mild High Functioning Autism. He has found it useful and his teacher read the book to his class last year. We have found it very helpful as a tool to explain both to our son and others what nonverbal communication is.
While this is intended as a children's book, there is a lot of meaning in the pages. I'll write some example questions to ask a child about some of the situations that will bring out some of the ideas.
This book is available on Lulu.com