Question

Three areas of childhood that researchers have studied are

Answer 1

Early childhood development is generally divided into three age categories. The first age category includes infants and toddlers who are between the ages of birth and 3 years of age... The second age category of early childhood development includes preschoolers who are 3 to 5 years of age...The final category of early childhood development includes those children in the primary grades who are between 6 and 8 years of age.

Answer 2

1) infants and toddlers

2) preschoolers

4) children in primary school