Four research questions guided this study:1. What forms of paternal support do first-time mothers and first-time fathers perceive as positively or negatively supportive of breastfeeding?2. Do perceived positive and negative forms of paternal support of breastfeeding differ before and after delivery?3. Is breastfeeding intention related to a mother's perception of paternal social support? 4. What forms of paternal support are related to breastfeeding duration and/or early termination?