1. Prenatal - fertilization to birth
2. Infancy - birth to 2 weeks
3. Babyhood - 2 weeks to 2 years
4. Early Childhood - 2 to 6 years
5. Late Childhood - 6 to 10/12 years
6. Puberty - 10/12 to 14 years
7. Adolescence - 14 to 18 years
8. Early Adulthood - 18 to 40 years
9. Middle Adulthood - 40 to 60 years
10. Late Adulthood - 60 to death