"Act your age"

Different roles or behaviors are considered appropriate depending on whether we are a toddler, teenager, or adult, etc

Concerns the appropriate age for life events

"on time" & "off time"

Special events that mark the transition from one role to another

(bar mitzvah, confirmatin, marriage)

the status of elderly declines s societies become more modern

(Status of old age was low in hunting-and-gathering societies)

looks at old age as a time when both the older person and society engage in mutual separation 

(retirement from work)

the more active people are, the more likely they are to be satisfied with life;

most people in old age continue with the same roles and life activites established earlier because they have to continue to have the same needs and values

widely shared prejudice of older people

age-as-decline

losing the ability to control such basic matters as bedtime and mealtime choices

(nursing home residents)

the idea of a trait beneficial in early life by harmful in later life

(sickle cell anemia able to fight off malaria)

effects brought a obut by the physiological process of again, along with social responses by others to those effects

(ex. gray hair and reserce capacity tends to diminsh)

effects that are affecting all age groups in society at the same time 

(ex. the change in communication promted by the internet and email)

effects

associated with events affecting groups of people during the same years

(ex. children of the Great Depression who experienced financial hardship shaped lifelong attitiudes towards money)