Preface; Members of the study group; General introduction; Part I. The Nature of Communication: Introduction; 1. Formal analysis of communicative processes D. M. Mackay; 2. The comparison of vocal communication in animals and man W. H. Thorpe; 3. Human language J. Lyons; Part II. Communication in Animals: Introduction; 4. Some principles of animal communication J. M. Cullen; 5. The lower vertebrates and the invertebrates W. H. Thorpe; 6. Vocal communication in birds W. H. Thorpe; 7. The information potentially available in mammal displays R. J. Andrew; Part III. Non-Verbal Communication in Man: 8. A comparative approach to the phylogeny of laughter and smiling J. A. R. A. M. van Hooff; 9. Non-verbal communication in human social interaction Michael Argyle; 10. Non-verbal communication in children N. G. Blurton Jones; 11. Similarities and differences between cultures in expressive movement I. Eibl-Eibesfeldt; 12. the influence of cultural context on non-verbal communication in man Edmund Leach; 13. Non-verbal communication in the mentally ill E. C. Grant; 14. Plays and players Jonathan Miller; 15. Action and expression in western art E. H. Gombrick; Epilogue; References; Author index; Index.