Researchers have long identified the crucial role that the primary caregiver plays in the infant’s development. Over the past eight years, neuroscience has begun to shed light on the neurological processes underpinning these phenomena.neuroscientists are discovering that human brains are specialized for receiving and understanding stimulation from other people and the kinds of early experiences that are necessary for the optimal functioning of these neural pathways.1

EARLY YEARS STUDY 2, Hon. Margaret Norrie McCain et al 2007

http://earlyyearsstudy.ca/media/uploads/more-files/early_years_study2-en.pdf