Both traditional and innovative methods of evaluating health care interventions are explored in this volume. The major issues examined include design of qualitative research, randomized trials, surveys and analysis of large data sets. Specific examples relevant to practice are also provided.

The study of voice provides us with important insights into human social interaction. This volume brings together the many interdisciplinary perspectives on voice - from acoustic phonetics to voice pathology, from the history of vocal function to social psychology - and defines them within the context of social interaction. The author also develops a theoretical taxonomy that explains vocal function based on a number of functional models of nonverbal communication, social psychology, linguistics and communication studies.