Readings are included on seven topics: 1) theories and models of communication processes, 2) acquisition and performance of communication behaviors, 3) human information processing and diffusion, 4) persuasion and attitude change, 5) psychophysiological approaches to studying communication, 6) interpersonal communication within transracial contexts, and 7) measuring communication effects. An introductory article begins each chapter and provides a summary of the literature concerning the topic and frame of reference for the readings to follow. Each introductory article includes a section on principles derived from theory and research findings, along with implications for employing them in communication situation. An epilogue focuses on key issues discussed in the book. Throughout the book are status reports on present knowledge concerning the topics. (JK)