Maternal singing of lullabies during pregnancy and after birth: Effects on mother-infant bonding and on newborns' behaviour. Concurrent Cohort Study

Background: Mother-infant bonding is of great importance for the development and the well-being of the baby. The aim of this Concurrent Cohort Study was to investigate the effects of mothers singing lullabies on bonding, newborns' behaviour and maternal stress. Methods: Eighty-three (singing cohort) and 85 (concurrent cohort) women were recruited at antenatal classes at 24 weeks g.a. and followed up to 3 months after birth. The Prenatal Attachment Inventory (PAI) and the Mother-to-Infant Bonding Scale (MIBS) were used to assess maternal-foetal attachment and postnatal bonding. Findings: No significant influence was found on Prenatal Attachment; by contrast, Postnatal Bonding was significantly greater (i.e. lower MIBS) in the singing group 3 months after birth (mean 1.28 vs 1.96; p = 0.001). In the same singing group, the incidence of neonatal crying episodes in the first month was significantly lower (18.5% vs 28.2; p. <. 0.0001) as were the infantile colic (64.7% vs 38.3%; p = 0.003) and perceived maternal stress (29.6% vs 36.5%; p. <. 0.05). Infantile colic was reduced in the singing group, even in the second month after birth (22.8% vs 36.5; p = 0.002). At the same time, a reduction was observed in the neonatal nightly awakening (1.5% vs 4.7; p. <. 0.0001). Conclusions: Mothers singing lullabies could improve maternal-infant bonding. It could also have positive effects on neonatal behaviour and maternal stress