The early communication network existing between a mother and her 12-week-old infant was explored. Over 50 infants of both sexes from a variety of social classes were seen in their homes, and a wide variety of maternal and infant behaviors were studied. Of special interest was the vocalization-in-communication data. The results indicate a lawful, consistent, and predictable pattern of communication and suggest that meaning is being established at the very beginning of life. (Author)