1. Face to face—Proximity and distance
2. “The Human Newborn and His Mother: An Ethological Study of Their Interaction.” Unpublished doctoral dissertation, University of Pennsylvania, 1975.
3. The Newborn Communicates
4. Assessing an Assessment: Conceptual Considerations, Methodological Issues, and a Perspective on the Future of the Neonatal Behavioral Assessment Scale
5. and “Stages of Early Infant Organization Accomplished in the Interaction with the Caregiver: The Study of a Multiply Handicapped Infant and His Mother.” Paper presented at the Meeting of the American Cleft Palate Association, Atlanta, April 1978.