This book describes the available options, and the rationale for selecting among them, for observing, measureing or assessing process of communication. This approach contrasts radically to the one taken in many preceding volumes which explain the applicability of general types of quantitative research, for example, content analysis, laboratory experiments, and statistical analysis, to the study of communication. This approach focuses on the methodological problems and solutions unique to the study of communication. It provides the readers with an outline of the problems and/or alternatives that face the researcher.