Nonverbal behaviour is examined as part of the package of interacting signals which are fundamental to interpersonal, group, and all forms of mass mediated communication. Surveys of the major divisions of kinesics, proxemics, artifactual, chronemics and paralinguistics are supplemented with published scholarship in the comparatively minor areas of tactile, environmental and olfactory research. Cross-cultural implications are explored. Primary emphasis is placed on the practicalities for the communication professional who designs as well as interprets signs. A research project gives practical experience for methodically recording naturalistic observation.