Formatting a written piece is important for the reader. This article helps us to understand why.

I’m told we speak at 100 to 300 words per minute and hear at 900 to1600 words per minute. Women tend to speak more words during the day than men. This could be because they are constantly repeating what they have said to men. No doubt women hear much better than men but we all tend to tune out about 75% of what we hear.  So 25% retention is considered good for the spoken word. 

What about reading retention? Read more.