AP Human Geo Notes

Demographic Transition Model (DTM)

Explains the transition from high birth and death rates to low birth and death rates as a country develops economically.

Who created the Demographic Transition Model and in what year?

Warren Thompson in 1929.

Malthusian Theory

Proposed by Thomas Malthus, suggesting that population growth will outpace food production, leading to shortages or famines.

Who proposed the Malthusian Theory and in what year?

Reverend Thomas Malthus in 1798.

Boserup Hypothesis

Ester Boserup's hypothesis that population growth leads to improved farming techniques, avoiding food shortages.

Who created the Boserup Hypothesis and in what year?

Ester Boserup in 1965.

Epidemiological Transition Model

Tracks the change in main causes of death from infectious diseases in less developed societies to degenerative diseases in more developed ones.

Who created the Epidemiological Transition Model and in what year?

Abdel Omran in 1971.

Gravity Model

Explains that interaction between two places depends on their population sizes and the distance between them.

Who is credited with the development of the Gravity Model and in what year?

Derived from Newton's law of gravitation; first applied to migration by Ernst Ravenstein in 1885.

Migration Transition Model

Shows how migration patterns change as countries develop, from rural to urban migration during industrialization to international migration in later stages.

Who created the Migration Transition Model and in what year?

Wilbur Zelinsky in 1971.