This study aims to build upon the findings of the earlier randomized controlled trial (RCT) conducted at the Columbia University Medical Center (CUMC) comparing effects, both physiological and emotional, of the current standard method of encouraging contact between mothers and their babies in the NICU with the more specific approach of Family Nurture Intervention (FNI). In addition to receiving standard care, NICU families assigned to FNI received added intervention that focused on supporting the parents and facilitating emotional connection between mother and infant during the infant's NICU stay.