2 To speak or write?
The major difference when writing compared to speaking is that usually you have the advantage of being able to prepare and draft your text.
Often, speech or writing will suit a particular message more than another depending on the context. For example, a coach may give verbal feedback to an athlete and then follow this up with electronic written communication. Sometimes writing is used as a more formal way of recording an exchange, particularly in management situations.
But whatever the communication channel, how do we help make our messages effective?