1. Bell RQ: A reinterpretation of the direction of effects in studies of socialization.Psycho Rev 75:81?95, 1968.
2. Lewis M and Rosenblum L (Eds):The effect of the infant on its caregiver: The origins of behavior, Vol 1. New York: Wiley, 1974.
3. Bell RQ and Harper LV:Child effects on adults. Hinsdale, New Jersey: Lawrence Erlbaum Associates, 1977.
4. Richards MPM: First steps in becoming social. In MPM Richards (Ed),The integration of a child into a social world. London: Cambridge University Press, 1974.
5. Sameroff A: Transactional models in early social relations.Hum Dev 18:65?79, 1975.