The document outlines 5 major stages of human development: 1) infancy from birth to 2 years, 2) childhood from age 3 to 12 split into pre-childhood and later childhood, 3) adolescence from age 13 to 19, 4) adulthood from age 20 to 60, and 5) old age from age 61 until death.

1. AGE SPAN OF HUMAN
DEVELOPMENTAL STAGES
• 1-INFANCY-From birth to 2 years
• 2-CHILDHOOD-From 3rd year to 12 years
• (a)PRE CHILDHOOD-From 3rd year to 6 years
• (b)LATER CHILDHOOD-From 7th year to 12
years
• 3-ADOLESCENCE-From 13th year to 19 years
• 4-ADULTHOOD-From 20th year to 60 years
• 5-OLD AGE-From 61 years till death