This document discusses principles and types of non-verbal communication. It notes that non-verbal communication supplements verbal communication, regulates interactions, establishes relationships, and reflects cultural values. The document outlines five main principles of non-verbal communication and identifies five types, including body language, paralanguage, space language, time language, and sign language. It also provides examples of paralanguage elements like pitch, speed, and volume and defines intimate, personal, social, and public space.