1. The document presents a model of the communication process that involves 6 steps: reception of signals, signals reaching the mind/brain, the mind filtering signals and giving them meaning, symbolizing the meaning, encoding the message, and the cycle repeating as the listener receives and interprets the message.
2. Key aspects of the model include that communication occurs within a sensory environment, sensory receptors detect only some signals and meanings can differ between individuals based on their filters.
3. Written communication differs in allowing greater creativity, having a time lag between messages, and typically involving only one cycle of the communication process.