Infants and children spend one- to two-thirds of their life asleep. Despite this, very little attention has been paid to understanding both normal sleep and sleep-related abnormalities during child development. There are profound changes in sleep and circadian rhythm during growth and maturation. Sleep is particularly important in children, due to its putative role in consolidating memory and other neurocognitive functions.Sleep in Children: ULUL/ULLIexplores normal changes in sleep during pediatric development, and examines important behavioral aspects of sleep, cultural effects on sleep, and non-respiratory sleep-related disorders/LILIincludes a section devoted to new techniques that are currently being used in sleep-related research/LILIdiscusses the current research within the field of pediatric sleep disorders/LILIoutlines a future framework for the development and study of childhood sleep disorders/LI/UL