2. Pre-natal (conception to Birth)
Age when hereditary
endowments and sex are fixed and
all body features, both external and
internal are developed.
3. Infancy( Birth to 2
years)
Foundation age when
basic behavior are
organized and many
ontogenetic maturation
skills are developed.
4. Early Childhood(2 to 6
years)
Pre-gang age exploratory,
and questioning. Language and
elementary reasoning are
acquired and initial socialization
is experienced.
5. Late Childhood (6 to 12 years)
Gang and creativity age when
self-help skills, social skills,
school skills and play are
developed.
6. Adolescence(Puberty to 18
years)
transition age from childhood
to adulthood when sex maturation
and rapid physical development
occur resulting to changes in ways of
feeling, thinking and acting.
7. Early Adulthood (18 to 40 years
Age of adjustment to new patterns of life
and roles such as spouse, parent and
bread winner.
8. Middle Age (40 years
to retirement)
Transition age when
adjustments to initial
physical and mental
decline are experienced.
9. Old Age (retirement
to death)
Retirement age
when increasingly
rapid physical and
mental decline are
experienced.