-
Period: to
prenatal stage
last from conception to birth -
Period: to
neonatal stage
last from birth to 2 weeks -
Period: to
infancy stage
last 2 weeks t first birthday -
Period: to
toddler stage
last 12-36 months -
Period: to
preschool stage
last 3-6 years -
Period: to
school-age stage
last 6-12 years