Lasswell's model of communication (also known as Lasswell's communication model) describes an act of communication by defining who said it, what was said, in what channel it was said, to whom it was said, and with what effect it was said.
Laswell’s model of communication
Levels of communication
Extra-personal communication
1. Extrapersonal Communication: Communication is a process that takes place with human . entities and non-human entities as well. When communication is done with non-human entities it is called to be extra personal communication.
The perfect coordination and understanding between human and non—human entities results to extra personal communication. In this communication one participant of the communication process uses sign language and the other is verbal.