It's more than how we speak. It's how we walk into a room, where we direct our gaze. Even the most boisterous individual would not be loud and jovial at a funeral. But most people do have enough consistency in their behavior to allow themselves and others to predict their behavior. Everyone acts friendly sometimes, but when a person acts friendly more than the average person, others start to think about that person as being friendly.
People then come to expect friendly behavior from that person all the time.
It is a fun, non-threatening tool that highlights the strengths and weaknesses of different communication styles. Participants discover their communication style by choosing the communication behaviors that best describe them. The development of this tool began with the style literature. An extensive list of sources was created and a decision was made on which forms of communication would be included in the instrument. With these forms in mind, a list was generated of more than 100 communication behaviors.