Communication is the process of exchanging messages between a sender and a receiver. Effective communicators need to understand channels of communication and media, effective listening skills, barriers to communication, and non-verbal cues. In addition, one must be prepared to read for meaning, speak properly, and write effectively.
Channels (or media) are the avenues through which a message can be delivered. The choice of medium depends on the nature and importance of the message. Effective listening allows a person to identify the purpose of the speaker, give feedback, and
evaluate the speaker's message. Communication may be impeded by a number of barriers, including physical such as distance and position from the speaker, and verbal as in using vague or unclear language. Lastly, a person's non-verbal cues—such as his or her tone of voice, emphasis, and body language—are critical because they often communicate as much as the speaker's actual words.