Human Development Across the Lifespan: From Prenatal to Late Adulthood

Prenatal

• It is the period of development of the fetus in a mother’s womb.
• There is a lot of cell division and cell maturation at this stage.
• The stage is characterized by the maturation of the body organs and the tissues of the fetus.

Infant/Toddler (0-2 yrs)

• These are the first years of the child’s life.
• It is characterized by physical development and movement of the infant’s mouth, body, and eyes as they seek objects for interest and comfort.
• Development is achieved through practice, observation, and speaking to family members.
• Infants are fully dependent on their parents and caregivers.

Early Childhood (3-5 yrs)

• Children at this age are at the curiosity stage and they have high levels of physical independence.
• They can feed, dress, and toilet themselves.
• Children of this age have developing social skills and can make friends easily.

Physically, at this age, children are able to climb steps with alternating feet, gallop, throw a ball, play in the playground, color using crayons, and imitate drawing various shapes. Socially, they enjoy playing with other children, have a particular friend, and initiate play with their friends.

Middle/Late Childhood (6-11 yrs)

• Characterized by advanced physical abilities, mental abilities, social skills, friendships, and language.
• Children think logically and can differentiate between reality and fantasy.
• Better problem-solving skills, longer concentration, and the ability to plan and organize.
• Less dependent on parents; school-going children rely on their friends.

Adolescence (12-19 yrs)

• A transition between childhood and adulthood.
• Characterized by physical changes and tremendous intellectual and emotional growth.
• It takes time for adolescents to adjust to their new bodies.

Emerging/Early Adulthood (20-24 yrs & 25-40 yrs)

• Fully established identity in dislikes, likes, philosophies, and preferences.
• Emotionally stable individuals.
• Established careers and long-term relationships.
• Most individuals at this stage are parents and rearing children.

Middle Adulthood (40-65/70 yrs)

• Stage that comes before old age.
• Biological/physical changes such as impaired hearing and vision, increased joint pain, and weight gain.
• Reduced ability to reproduce; women lose this ability on reaching menopause.

Late Adulthood (66/71 yrs-death)

• Decline in senses-hearing, vision, smell, and taste.
• Many diseases and illnesses at this age.
• Prone to hypertension, arthritis, Alzheimer’s disease, and neurocognitive disease.

References

• Centers for Disease Control and Prevention. (2024). Child Development. https://www.cdc.gov/child-development/