1. Infant-mother attachment and social development: Socialization as a product of reciprocal responsiveness of signals;Ainsworth,1974
2. The Brazelton Neonatal Behavioral Assessment Scale (BNBAS);Als;Journal of Abnormal Child Psychology,1977
3. Neonatal Behavioral Assessment Scale;Brazelton,1973
4. The origins of reciprocity: The early mother-infant interaction;Brazelton,1974
5. Experimental and quasi-experimental designs for research;Campbell,1963