Effects of paternal involvement on infant preferences for mothers and fathers.

45 Swedish infants were observed at home interacting with their mothers and fathers when they were 8 and 16 months old. 15 of the fathers had spent at least 1 month (X=2.8 months) as primary caretakers. Analyses revealed that degree of paternal involvement had no effect on preferences displayed on measures of attachment and affiliative behaviors. At both ages, infants showed clear preferences for their mothers over their fathers, which contrasts with the lack of preference evident in previous studies of American infants. It is suggested that the failure to replicate earlier findings is attributable to the fact that Swedish fathers are not distinguished by an involvement in play and so are less affectively salient to their infants.