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Population Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations
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Population Studies Demography: study of human populations with respect to their size, structure and development. Why do we need to know changes in human population? *we need to remember that the situation is dynamic in population studies.* - numbers, distribution, structures and movements constantly change in time and space
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Population Studies
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Until about 200 years ago, population growth was slow. Since then, there had been an enormous increase (previous graph). Population Explosion: sudden and great increase in world’s population. Rate of increase has become exponential.
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Reasons for the rapid increase onset of agricultural and industrial revolution in the 18 th C. improvements in medical sciences
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Reasons for the rapid increase Birth rate (BR): number of live births per year per 1000 people Death Rate (DR): number of deaths per year per 1000 people Infant Mortality Rate (IMR): number of deaths per children below one year of age per 1000 people
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Reasons for the rapid increase Natural Increase (NI): excess of births over deaths per 1000 person Population Density: number of people per sq. km of an area Total Fertility Rate (TFR): average number of children each woman would bear during her childbearing years Replacement Fertility Level: level of fertility at which a given population is replacing itself.
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Reasons for the rapid increase Zero Population Growth: When the BR is the same as the DR.
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Reasons for changes in Birth and Death rates 1.standard of living - medical facilities, health care - housing - hygiene - water supply - sanitation and nutrition
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Reasons for changes in Birth and Death rates 2. Cultural factors - way of living, customs and beliefs - role of children, religion - region of the world (developed Vs. under-developed) 3. Government policies - increase/slow down BRs
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Demographic Transition Model
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4 stages of demographic transition Each stage is linked to the economic and social development of the individual country Stage 1 Stage 2 Stage 3 Stage 4
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4 stages of demographic transition STAGE 1 - AGRICULTURAL SOCIETY - HIGH BRs & DRs = SLOW GROWTH High DRS due to: poor medical facilities sanitation water supply diet natural catastrophies high IMR
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4 stages of demographic transition High BRs due to: social desire for larger families because children are economic assets high IMR security purposes ignorance of birth control
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4 stages of demographic transition STAGE 2: AGRICULTURAL SOCIETY + EARLY INDUSTRIALISATION - HIGH BRs, FALLING DRs, RISING RATE OF INCREMENT FALLING DRs : improvement in medical care sanitation water supply sewerage disposal food supply
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4 stages of demographic transition HIGH BRs: social norm still that of an agricultural society low wages so children can work to get money child L is allowed birth control still NOT available
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4 stages of demographic transition Asian Countries - because of western colonisation & missionary influence may experience a decline in the DRs, but not the accompany industrial development and agricultural improvement of the West. Some experience a slower rate of development undertaken by newly independent governments. Stage 2: India, Malaysia & Indonesia
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4 stages of demographic transition STAGE 3: MATURE INDUSTRIALISED SOCIETY - FALLING BRs & LOW DRs FALLING BRs: increased urbanisation brings about a change in the society - smaller families - cost of a child families can enjoy higher living standards with fewer members practising birth control methods
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4 stages of demographic transition Education to girls - good job prospects instead of marrying at an early age and bearing children delay marriage - reducing the number of children being born (Fertility Rate) - all leads to a decline in the BRs government policies DRs: slight decline as most advances made in the previous stages SINGAPORE FALLS IN THIS CAT.SINGAPORE FALLS IN THIS CAT.
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4 stages of demographic transition STAGE 4: ADVANCED INDUSTRIALISIED SOCIETY BRs: TFR continues to decline as the role of women changes - education, working, career-minded instead of getting married at an early age and having children having No kids! Marriage under institution also comes under battering, also ending in divorces
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4 stages of demographic transition Role of woman as a traditional child bearer becomes INVALID economic security with greater income, $avings, insurance policie$ erodes the concept that children are a source of old age security children leaving home earlier Fluctuation in BRs may indicate govt. efforts in increasing BRs!!
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4 stages of demographic transition Egs: many European countries such as Sweden, France, Germany & Japan DRs: levels out as advances in medical sciences extends life expectancy
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