The human lifespan

Prenatal

(From fertilisation until birth)

Infancy

(From birth until age 2)

Early childhood

(From age 2 until age 6)

Late childhood

(From age 6 to age 12)

Youth

(From age 12 to age 18)

Early adulthood

(From age 18 to age 40)

Middle adulthood

(From age 40 to age 65)

Late adulthood

(From age 65 until death)

Development of the body's organs and structures, and substantial growth.

Development of motor skills and ability to walk, use simple words, identify familiar people, throw tantrums, and play social games.

Slow and steady growth and the accomplishment of new skills such as social skills, being toilet trained, and making friends.

Slow and steady growth - changes such as refining reading and writing skills, developing long term memory, understanding gender stereotypes, and refining motor skills.

Rapid growth, increased independance, sexual maturity, the ability to reproduce, more complex relationships, development of life goals.

The body reaches it's physical peak and then declines, time of maintenance and repair, changes may come with marriage and/or children.

Stability in work and relationships, the further development of identity, maturation of values and beliefs, financial security, physical signs of aging and menopause for women. May become grandparents.

Change in lifestyle with retirement and financial security, likely more participation in voluntary work and in leisure activities, the decline of health and wellbeing.