The concept of "intersubjectivity" has emerged as a common denominator in approaches to infant communication and children's understanding of thought and emotion in others. This book brings together for the first time leading international figures in psychology, psychopathology, sociology, and primatology to address the key question of the role of intersubjectivity in early development. These distinguished contributors offer a new understanding of child development, learning and communication. This book is an invaluable resource for researchers in emotion and communication across the social and behavioral sciences.