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This is an overview table of the periods in human development.
Note the difference between the reached age and the age number, which is one more. For instance, a newborn is 0 years old during the 1st year.
Different sources may have various definitions, but the outline below is generally accepted.
| Age, approximately | Period | |||||
| Reached age | Nr | |||||
| 0-9 | Weeks/Week of gestational age |
1-10 | Prenatal development | Human embryogenesis | ||
| 10 - birth | 11 - birth | Human fetal development | ||||
| 0 | days/day | 1 | infancy | neonate/newborn[1] | ||
| 1-2 | 2-3 | |||||
| 3-6 | 4-7 | |||||
| 1 | weeks/week | 2 | ||||
| 2-3 | 3-4 | |||||
| 4-5 | 5-6 | |||||
| 6-7 | 7-8 | |||||
| 2 | months/month | 3 | ||||
| 3 | 4 | |||||
| 4 | 5 | |||||
| 5 | 6 | |||||
| 6-7 | 7-8 | |||||
| 8-9 | 9-10 | |||||
| 10-11 | 11-12 | |||||
| 12-17 | 13-18 | |||||
| 1.5 | years/year | 2.5 | childhood | Early childhood | toddlerhood | |
| 2 | 3 | Preschooler | ||||
| 2.5 | 3.5 | |||||
| 3 | 4 | play age | ||||
| 3.5 | 4.5 | |||||
| 4 | 5 | |||||
| 4.5 | 5.5 | |||||
| 5 | 6 | |||||
| 6 | 7 | Middle childhood | ||||
| 7 | 8 | School age | ||||
| 8 | 9 | |||||
| 9 | 10 | |||||
| 10 | 11 | preadolescence | ||||
| 11 | 12 | |||||
| 12 | 13 | Adolescence | puberty | |||
| 13 | 14 | |||||
| 14 | 15 | |||||
| 15 | 16 | |||||
| 16 | 17 | |||||
| 17 | 18 | |||||
| 18 | 19 | |||||
| 19 | 20 | Adulthood | Young adult | |||
| 39 | 40 | |||||
| 40 | 41 | Middle age [2] | ||||
| 59 | 60 | |||||
| ~65 | ~66 | Old age | ||||
| various | various | |||||
| various | various | Death | ||||
See also
References
- ^ ""Neonate"". Merriam-Webster online dictionary. Merriam-Webster. Retrieved on 2007-03-27.
- ^ Collins Dictionary
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Wikipedia content modification information:
- This page was last modified on 27 September 2008, at 14:47.
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