The Haifa Study of Early Child Care examined the unique contribution of various child-care-related correlates to infant-mother attachment. Findings indicated that, after controlling for other potential contributing variables (including mother characteristics, mother-child interaction, and mother- father relationship), center care adversely increased the likelihood of infants developing insecure attachment to their mothers compared with infants in maternal care, individual nonparental relative care, individual nonparental care, or family day care. (Author/KB)