Page 49 - University English for non-speacalist

Demography
The field of social science that concerns itself
with the study of population characteristics and trends
is termed Demography. Demography have developed
concepts, analytical tools, paradigms, and theories to
examine the size. Distribution, and age-sex structure
of populations and to understand and explain any
temporal, inter or intra societal variations that exist.
Demography is invaluable, therefore, to planners and
decision-makers in society because it enables them to
formulate and implement policies and projects on a
scientific basis and to avoid the pitfalls of relying on
guesswork and trial and error. Doubling time, total
fertility ratios, life expectancy, infant mortality, and
immigration and emigration rated are all examples of
the indicators that demographers have developed to
study and analyze population trends.

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