2. Each parent will then self-administer the nasal spray, which has been previously randomized by the investigational pharmacy to be either oxytocin or placebo. During the following waiting period, the Bayley Scales of Infant Development screener will be completed with the infant, to exclude developmental delays in areas of fine motor, gross motor, language or social development. This will be performed by a research associate who has been trained in the use of this standardized tool.