This article discusses the most widely accepted developmental stages in children.
[1] Holistic development sees the child in the round, as a whole person – physically, emotionally, intellectually, socially, morally, culturally and spiritually.
Developmental norms are sometimes called milestones – they define the recognized development pattern that children are expected to follow.
One way to identify pervasive developmental disorders is if infants fail to meet the development milestones in time or at all.
Changes in boys less dramatic, but enlargement of the testicles and penis typically occurs along with the growth of fine pubic hair and frequent, random erections.