In his article "The 'Effects' of Infant Day Care Reconsidered," Jay Belsky (see PS 017 108) concludes that maternal employment puts infants at risk for developing emotional insecurity and social maladjustment. After a review of Belsky's and other research, a different conclusion is offered in this paper. It is agreed that infants whose mothers work full-time during their first year are more likely than infants of mothers who work part-time or not at all to be classified as insecurely attached when such infants are observed with their mothers in Ainsworth's Strange Situation procedure. But the difference is not large, and it does not necessarily reflect emotional maladjustment. There is no clear evidence in the literature that day care places infants at risk. Belsky suggests that observed day care effects may be affected by day care quality; children's age, sex, and temperament; hours of separation from mother; overstimulation by mother; and congruence between mother's attitude and work status. There is no convincing evidence that these factors are involved. The mother's attitude toward the infant, her emotional accessibility and behavioral sensitivity, and her desire for independence (her own and the infant's) may be more important factors. Research is needed to assess and investigate such mediating factors. (PCB)