Adult attachment and jealousy of the partner–infant relationship at the transition to parenthood

Using data from a sample of 182 dual-earner different-gender couples who were followed across their transition to parenthood, we adopted a dyadic approach to examine associations between expectant mothers’ and fathers’ attachment anxiety and avoidance in the third trimester of pregnancy and their own and their partners’ jealousy of the partner–infant relationship at 3 months postpartum. Results of an actor–partner interdependence model (APIM) revealed that expectant mothers and fathers higher in attachment anxiety reported greater jealousy of the partner–infant relationship at 3 months postpartum. The partners of expectant mothers and fathers higher in attachment anxiety also reported greater jealousy of the partner–infant relationship. There were no parent gender differences in actor or partner paths linking attachment anxiety and jealousy. Attachment avoidance was not associated with one’s own or one’s partner’s jealousy of the partner–infant relationship. An exploratory mediation analysis revealed greater jealousy of the partner–infant relationship as a potential mechanism linking higher attachment anxiety to lower dyadic adjustment at 9 months postpartum. Overall, results suggest that attachment anxiety in either partner may precipitate maladaptive relationship dynamics in the early postpartum period that may ultimately interfere with the establishment and maintenance of healthy parent–child and coparenting relationships.