I am reading a book on childbirth as part of my pet-interest in midwifery care and natural childbirth. In a portion of the book on the importance of early contact between mother and infant (including skin-to-skin, early breast feeding, kangaroo care and rooming in) the author cited an interesting study result. In a 1975 study from the Journal of Pediatrics looking at mother's and children allowed contact early and often immediately after birth showed - "[...] mothers who had experienced extra early contact with their babies spoke differently to their children at two years of age, asking more questions, adjectives, and words per proposition, along with fewer commands and content words"
