explain the terms primary ageing, secondary ageing, tertiary ageing,
differential ageing.

Hello tinapoo-ga,

Primary ageing (or aging, in the American spelling) is also called
normal aging.  It refers to the biological changes that are typical
among most people as they get older, especially gradual physical
deterioration.

Secondary ageing, or pathological ageing, concerns age-related
disease, such as cardiovascular disease or dementia.  Such diseases
generally increase with age, but are not universally part of the
ageing process.

Tertiary ageing refers to the great increase in physical and cognitive
deterioration in the months before death.  It is not so much
correlated with age, but rather with the approach of death.

The following two sources provide the basis for my summarized
definitions, plus additional details:

"Occasional Paper No 3 - Psychological Ageing: Themes and Variations",
by Mary A. Luszcz [under heading "Ageing is not a Unitary Construct"]
South Australian Network for Research on Ageing
Center for Ageing Studies
http://www.cas.flinders.edu.au/sanra/occasional/paper3.html

"Older Worker", by Anita Liberalesso Neri (Feb. 2000) [section on
"Patterns of Ageing"]
Biblioteca Prof. Joel Martins
http://www.bibli.fae.unicamp.br/revgeron/aln01.html#5.%20PATTERNS%20OF%20AGING

Differential ageing concerns "the difference between chronological and
biological age"; it means that ageing might be "highly
individualized", as opposed to a "uniform process for everyone".  As
the last of the following three sources indicates, there are many
factors that can contribute to differential ageing.

"Volume V, Number 2, Fall 1980 – Aging"
[abstract of Francis Forest, Ursula Forest-Streit, "The concept of
differential aging (its use in health study in the workplace)"]
Santé Mentale au Québec
http://www.cam.org/~rsmq/smq/english/revues/v5n2.htm#59

"Ageing differently: Potential and limits"
NOVA - Norwegian Social Research
http://www.isaf.no/nova/nyheter/kalender/EBSSRS/Abstracts/Smith.htm

Google cache of "Population Aging: An Overview of the Past Thirty
Years" (Report prepared by Pierre-Joseph Ulysse under the guidance of
Frédéric Lesemann for the Division of Aging and Seniors, Health Canada
1997) [in subsection on "The differential aging model"]
Health Canada
http://216.239.57.100/search?q=cache:BpNcqQoEPQ8C:www.hc-sc.gc.ca/seniors-aines/pubs/population_aging/ulys-eng.pdf

I hope that this information is helpful.

- justaskscott-ga


Search terms used, by themselves or in combinations:

"primary aging"
"primary ageing"
"secondary aging"
"secondary ageing"
"tertiary aging"
"tertiary ageing"
"differential aging"
"differential ageing"

thank you thank you i was at a mental blank and you answered in a
language i could understand thanks again and hope you have a lovely
day.