Communication takes place where there is a Sender, a Message to be sent, a Channel for carrying the Message, and a Receiver of the Message.

Interpersonal Communication in Health Services includes Education, Motivation and Counseling.

Traditional media and Mass media are also commonly used communication tools.

A broad variety of models and theories have been developed to help explain the process of communication and how communication can affect human behavior:
1. Change Theories Summaries
2. Short summary of major theories
3. Steps to behavior change