Which age range below is incorrectly labeled with its piagetian stage?

12 years—adulthood; postoperational stage

The Piaget stages of development is a blueprint that describes the stages of normal intellectual development, from infancy through adulthood. This includes thought, judgment, and knowledge. The stages were named after psychologist and developmental biologist Jean Piaget, who recorded the intellectual development and abilities of infants, children, and teens.

Piaget's four stages of intellectual (or cognitive) development are:

im back lol i heard you where asking for me

the median of the data is 4.5.