I say yes a lot. I think it, too. The word “yes” literally appears in big, bold, red letters in my mind when someone has a good idea (or asks me to go skiing on a powder day). I didn’t give it a lot of thought until I came across a book on the impact of words on your brain. http://www.psychologytoday.com/blog/words-can-change-your-brain/201207/the-most-dangerous-word-in-the-world
Andrew Newberg, M.D., and Mark Robert Waldman, giants in the fields of neuroscience and communication, researched the impact of negative and positive words on the brain and brain function. Their findings are compelling. In short, brain scans of people who were shown the word “NO” showed an immediate release of dozens of stress producing hormones, which interrupt normal brain function and diminish the brain’s ability to reason, effectively communicate, use logic, etc. (Amazing, right?) The work of these two leaders, and many others in the fields of neuroscience and psychology, help us to understand why negativity is not good for productivity, problem-solving, the bottom line, or your own well-being.