Birth is the first important transition of human development - biological, social, and behavioral in a cultural context - and it has psychological consequences.
Newborns are very skilled: sensory capabilities, and response capabilities. These form the first practical sensory-motor action patterns.
Infancy is the developmental stage of sensorimotor intelligence.
Culture shapes the ways adults interact with newborns, providing cultural designs for living.
Sleeping, feeding, and crying become coordinated with the social world.
Different theoretical frameworks emphasize different
"mechanisms" of developmental change.