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Population
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SOME DISCUSSION QUESTIONS: Identify one demographic trend that is likely to affect you at some point during your lifetime. Identify one demographic trend that has/will affect Canadian society.
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Population and Policy The main population phenomena are: u FERTILITY u MIGRATION u and MORTALITY.
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Processes and States u DEMOGRAPHY studies the stock (or state) of populations (their size, distribution and composition) at a given time point and their flow (or processes involving population change).
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The stock and flow of population are dynamically interrelated. For example, P2=P1+B-D+I-E, where P2 is population at time 2, P1 is population at time 1, B is births, D is deaths, I is immigration and E is emigration.
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Malthus One of the two classical perspectives on population processes is that of Malthus. u Positive checks on population. u Preventative checks on population.
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Marx u The second classical theory of population is Marx’s.
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Demographic Transition Theory u An important modern demographic theory is the THEORY OF THE DEMOGRAPHIC TRANSITION.
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Demographic Transition Theory birth rate death rate stagepreindustrialearly industrialmature industrial growthslowfastslow 123 Time
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World Population Growth
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World Population, 1750-2100 (in millions) millions Year
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World Population and Urban Growth, 1950-2020 1950 2020 2.5 billion 8.1 billion
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The World’s Largest Cities, 1950 and 2000 (in millions) 1950 London ======= 6.6 New York ==== 4.2 Paris === 3.3 Berlin == 2.4 Chicago == 1.7 Vienna == 1.6 Tokyo == 1.5 St Ptrsbrg. = 1.4 Philadel. = 1.4 2000 Mexico C. ========== 31.0 Sao Paulo ========= 25.8 Tokyo ======== 24.2 New York======= 22.8 Shanghai ======= 22.7 Beijing ======= 19.9 Los Ang. ====== 17.1 Bombay ====== 16.8 Calcutta ======16.7
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Population Change in Canada: Mortality u Life Expectancy u Infant Mortality
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Population Change in Canada: Fertility I u The baby boom of 1946-66 excepted, there has been a long-term decline in the fertility rate, from 7 births per woman in the 1850s to under 2 in the 1980s. u COHORT COMPLETED FERTILITY u TOTAL FERTILITY RATE
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Population Change in Canada: Fertility II u Immediate causes u Economic causes u Structural factors u Cultural factors
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Population Change in Canada: Immigration I
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Population Change in Canada: Immigration II
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Population Growth, Canada by Province and Territory, 1951-91 (in percent) % growth Canada = 201%
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Immigration and Emigration, Canada, 1988-95 (in ‘000s) ‘000s Year
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Some Key Demographic Formulae u Birth rate = births/1,000 population u Death rate= deaths/1,000 population u Rate of natural increase = (birth rate - death rate)/10* u Net migration = immigration - emigration u Rate of net migration = (net migration/1,000 population)/10* u Growth rate = rate of natural increase + rate of net migration* * expressed as percent per year
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