<unk>  are the theoretical milestones of child<unk> , some of which are asserted in nativist theories. This article discusses the most widely accepted<unk> al<unk>  in children. There exists a wide variation in terms of what is considered "normal," caused by variation in genetic, cognitive, physical, family, cultural, nutritional, educational, and environmental factors. Many children reach some or most of these milestones at different times from the norm. Holistic<unk>  sees the child in the round, as a whole person - physically, emotionally, intellectually, socially, morally, culturally and spiritually. Learning about child<unk>  involves studying patterns of growth and<unk> , from which guidelines for 'normal'<unk>  are construed.<unk> al norms are sometimes called milestones - they define the recognised pattern of<unk>  that children are expected to follow. Each child develops in a unique way; however, using norms helps in understanding these general patterns of<unk>  while recognising the wide variation between individuals. One way to identify pervasive<unk> al disorders is if infants fail to meet the<unk>  milestones in time or at all.
Child development stages
Childbirth positions
Sex after pregnancy
Pregnancy category
Metabolic age
Child sexuality
Sexual motivation and hormones
Prevalence of birth control