Infant Sleep as a Cornerstone for Cognitive Development

During infancy, humans typically spend most of their time asleep. It is intuitively plausible that this state is important for development and well-being. But there has been a surprising dearth of knowledge regarding the causal role of sleep for specific cognitive processes during this period. Recent experimental evidence has revealed a causal role of sleep for early memory processes. By supporting the consolidation and further processing of recently acquired memories, sleep shapes emerging knowledge networks. In addition, infants’ sleep patterns likely shape their learning environment by influencing caregiver sleep and behavior. Based on recent research, recommendations for policy and practice include (a) allowing individualized sleep schedules in child care settings, (b) providing easily accessible information on sleep and sleep promotion to caregivers, (c) integrating findings from sleep research in the training of early childhood educators, and (d) providing flexible parental leave arrangements that promote sufficient sleep in infants and caregivers.