Stages of development

1. 1)pre-natal stage ( conception to birth)

1.1. Perinatal

1.2. Postnatal

2. 2)Infancy 2-3 years

3. 3)childhood (3-12 years)

3.1. Late childhood (6-12 years)

4. 4) Adoloscene (12-19 years)

4.1. Early adolescence (12-15 years)

4.2. Late Adoloscene (15-19 years)

5. 5) Adulthood Beyond 19 years

6. Early childhood (3-6 years)