Read age as more than a birthday - Human Development

3Lesson 3 of 36

Read age as more than a birthday

A tight educational diagram showing two birth certificates with the same birth date, arrows pointing to the same calendar-age label: “Same chronological age.”

Chronological age is calendar time

Chronological age is the easy one: how much time has passed since birth. If two people were born on the same day, they have the same chronological age.