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Demographic Transition Model 10/8

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Presentation on theme: "Demographic Transition Model 10/8"— Presentation transcript:

1 Demographic Transition Model 10/8
Bell-ringer: What information is this graph displaying? Give one fact that you can determine from this graph?

2 Stages in Classic 4-Stage Demographic Transition Model (DTM)
(Some mention a new 5th stage)

3 Stage 1: “Pre-Industrial”
High birth rates and high death rates (both about 40) NIR = 0 or very slow rate No country or world region still in Stage One. STAGE ONE – Agrarian society, lots of deaths from famine and disease.

4 Stage 2: “Early Industrial”
High birth rates (over 30) but death rates begin to decline (to about 20) NIRs increase sharply (pop. explosion); growth rate increases throughout Stage Two Growth not from increase in births, but from decline in deaths MDCs = starts early 1800s LDCs = starts after 1950s

5 Why move from Stage 1 to Stage 2?
REMEMBER – the question is…. Why would more people live longer (lower CDR), NOT why would more people be born (higher CBR)?

6 Stage 3: “Later Industrial”
Birth rates decline sharply (to about 15) and Death rates decline a bit more (to about 10 or less) Pop. Growth occurs, but at a reduced and declining rate MDCs = starts in late 1800s LDCs = starts after 1980s* * Or hasn’t started yet

7 Why move from Stage 2 to Stage 3?
REMEMBER – the question is…. Why would the birth rate drop rapidly once the CDR has been reduced? Why would this happen at different times in MDC and LDC?

8 Stage 4: “Post-Industrial”
Birth rates and death rates both low (about 10) Population growth very low or zero (ZPG – zero population growth) MDCs = starts after 1970s LDCs = hasn’t started yet Much of Europe now or soon in population decline as birth rates drop far below replacement level

9 Population Pyramids: 5 things you notice. What does this image show you?

10 Analyze this graph: 5 things you notice
Analyze this graph: 5 things you notice. What is DIFFERENT about this pyramid?

11 Vertical axis: Age groups
Elderly Dependents Working populations Young dependents Horizontal Axis:Percentage/number people

12 Dependency Ratio – Ratio of dependents to the working population


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