demigraphic transition model

How many years in prehistoric (stage 1)

½ million years

What activities predominate the prehistoric stage (stage 1)

Hunting and gathering

What are birth rates like in stage 1

Hugh and erratic

What are death rates like in stage 1

death rates are high and erratic

What is population growth like in stage 1

Low population growth

Infant mortality rates in stage 1

High IMR and high TFR

What does stage 2 bring the creation of

Factory workers and job specialization

Death and birth rates in stage 2

Stable CBR and declining CDR

Where do most people live in stage 2

Rural areas but urbanization grows

Life expectancy in stage 2

Increases

Why did population explode in stage 2

Kids were needed for labor

IMR in stage 2

Declines due to medicine and technology

What is CBR and CDR in stage 3

CBR and CDR decrease but begins to even out

How many farmers in stage 3

Fewer farmers due to mechanized agriculture

What areas are popular in stage 3

Big city areas and urban rural areas

Fertility rate in stage 3

Education increases so fertility rates decrease

Cultural lag

Slowdown because the changes in social customs take time and population is increasing less rapidly and because of decreased fertility rates

Economy in stage 4

Almost no farmers not as many industry most work in service sector

Technology in stage 4

Technology is high

Birth and death rates in stage 4

Birth and death rates both bottom out so population growth is stable

Fertility rates in stage 4

Very low fertility rates

Life expectancy in stage 4

Increases life expectancy because one can treat diseases that used to kill

POSSIBLE stage 5

Death rates remain high, birth rates lower so population is SHRINKING