Childhood studies examines perspectives on childhood including that childhood is a social construction that varies by time and place. Societal and cultural factors influence views of childhood and experiences of children. Two historical schools of thought on childcare were the routine school, which emphasized strict schedules and separation of children from mothers, and the instinct school, which allowed for more flexibility and responsiveness to children's needs. Childhood experiences have changed over both place and time. Views on the nature of children range from the puritan view of children as inherently wicked to the romantic view of children as innocent. Children are recognized to have rights as established in the UNCRC, including rights to provision, protection, and participation. Childhood studies also considers the concept of children