The concept of childhood is

Contemporary sociology and developmental psychology distinguish "childhood" as a fixed biological life stage from childhood as a social and cultural construction. On the socio-constructivist view, the length of childhood, the activities and responsibilities considered appropriate for children, and how children are perceived are shaped by a society's historical period, culture, economic conditions and institutions, not fixed by biology alone.

Historians and sociologists of childhood, such as Philippe Aries's historical studies and the "new sociology of childhood" associated with Allison James and Alan Prout, show that ideas about children's innocence, dependence, schooling and labour have varied sharply across eras and societies. Medieval European society, for example, did not separate children from adult life and work the way modern industrial societies do. This documented variability is exactly what "childhood is a social construction" captures, which is why contemporary socio-constructivist theorists hold this position.

• Treating childhood as universally identical across cultures ignores this documented cross-cultural and historical variation in children's roles, schooling and daily lives.

• The view that children are born evil and must be civilized reflects an older, pre-modern doctrine of childhood as inherently corrupt, not a position held in contemporary developmental theory.

• The view that children begin with nothing and are shaped entirely by environment reflects a strict tabula-rasa or environmental-determinist stance, which denies the child any active role in constructing meaning, a role that socio-cultural theory treats as central.

Since only the social-construction view accounts for this documented variability while still granting the child an active role, contemporary socio-constructivist theorists hold that childhood is a social construction.