DEMOGRAPHIC TRANSITION

WHAT IS A DEMOGRAPHIC TRANSITION MODEL?

• Helps explain the structure of a population
• Depicts the population totals( CBR, CDR, etc)
• Is broken into four stages by levels of advancement of region
• Portrays societal evolution

STAGE 1- LOW GROWTH

• The natural increase rate was about 0
• Population stayed at about 500,000
• CBR and CDR rates were relatively similar
• Agricultural Revolution incited; changed how to obtain food
• Humans began to domesticate plants and animals

STAGE 2- HIGH GROWTH

• Population grew 10 times faster starting in 1750
• CDR drastically decreases but CBR stays same
• Living conditions improve greatly, extending life expectancy
• Medical revolution occurred in late 20th century
• New medical practices eliminated many previously fatal diseases

STAGE 3- MODERATE GROWTH

• Significant decline in mortality rate
• Social convention becomes to have fewer children
• CDR continues to decline because of modern medical technology
• Because of economic changes, children are no longer needed for work
• More people live in the city, where homes cannot accommodate large families

STAGE 4- LOW GROWTH

• Natural increase is about zero ( Zero Population Growth)
• Many women in societies have jobs, instead of staying at home
• Broader access to birth control methods
• People spend more time in entertainment activities than child care
• Total population is much higher than in Stage 1

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