Baby business

Berk, L. (1994).Infants and children: Prenatal through early childhood. Boston: Allyn and Bacon. Dunn, J. (1989). Siblings and the development of social understanding in early childhood. In P. G. Zukow (Ed.),Sibling interaction across cultures. New York: Springer-Verlag. Dunn, J. & Kendrick, C. (1982).Siblings: Love, envy, and understanding. Cambridge, MA: Harvard University Press. Gotlieb, L. & Mendelson, M. (1990). Parental support and first borns' adaptation to the birth of a sibling.Journal of Developmental Psychology, 11, 29–48. Teti, D., & Ablard, K. (1989). Security of attachment and infant-sibling relationships: A laboratory study.Child Development, 61, 1519–1528.