Preface. 1. Nonverbal Communication: Crossing the Boundary Between Culture and Nature Ullica Segerstr?le and Peter Molna?r Part 1: New Findings on the Universality of Human Nonverbal Communication 2. Universal Facial Expressions of Emotion: An Old Controversy and New Findings Paul Ekman and Dacher Keltner 3. Psychophysiological Reactions to Facial Expressions Ulf Dimberg 4. Universals in Interpersonal Interactions Wulf Schiefenh?vel Part 2: Development of Emotions in a Social and Cultural Context 5. Preverbal Communication in Humans and the Genesis of Culture Hanua Papouaek and Mechthild Papousek 6. Development of Emotions and Their Expression in Task-Oriented Situations in Infants and Preschool Children Klaus Schneider 7. Nonverbal Communication in Nonhuman Primates: Implications for the Emergence of Culture Stephen J. Suomi Part 3: The Social Role of Nonverbal Communication and Emotions: Evolutionary Inferences 8. Communication Signals of Animals: Contributions of Emotion and Reference Peter Marler and Christopher S. Evans 9. The Social Function of Smile and Laughter : Variations Across Primate Species and Societies Signe Preuschoft and Jan A.R.A.M. van Hooff 10. Primate Communication and the Ecology of a Language Niche Alexandra Maryanski 11. The Evolution of Emotions: The Nonverbal Basis of Human Social Organization Jonathan H. Turner Part 4: Nonverbal Communication as a Mediator Between Nature and Culture 12. Nonverbal Communication and Cl“¯