AP Human Geography (APHG) Models & Theories Practice Test

The idea being tested is identifying who linked migration patterns to social development and who studied how people mentally map regions in North America. Wilbur Zelinsky is the geographer who did both.

Zelinsky’s Migration Transition Model explains how migration flows change as countries move through the stages of demographic transition. In earlier stages, international migration from rural areas to more developed regions is common, while as countries industrialize and urbanize, internal migration—especially rural-to-urban movement—becomes the dominant pattern. This shift reflects broader social and economic changes that accompany development.

He also explored perceptual (vernacular) regions in the United States and Canada, showing that people’s mental maps define regional boundaries based on culture, identity, and everyday experience rather than just official lines. These perceptual regions help explain how residents think about where one region ends and another begins, which can influence travel, communication, and regional cohesion.

Other choices point to different theories: one is associated with the spatial organization of cities, another with urban land-use patterns, and another with geopolitical strategy, but none of those figures is known for both the Migration Transition Model and perceptual regions in the US and Canada.