Which of the following is not correctly matched ?

Question

Accepted Answer

Option 2 is not correctly matched because Everett Lee is best known for his "Push and Pull Factors" model of migration, not "Migration Systems Theory." While Lee's work certainly contributed to the broader understanding of migration systems, he is most directly associated with identifying the factors that compel people to leave a place (push factors) and attract them to another (pull factors). His 1966 paper "A Theory of Migration" is the seminal work outlining these push and pull factors. Migration Systems Theory, on the other hand, is a broader framework that considers the interconnectedness of places through migration flows and the feedback loops that sustain these flows. While Lee's work informs this theory, he didn't originate or define it.

Here's why the other options *are* correctly matched:

*   **Option 1: Zipf - Principle of Least Effort:** George Kingsley Zipf is indeed known for his "Principle of Least Effort," which suggests that people will tend to choose the path of least resistance or effort in their activities, including communication and movement. This principle is fundamental to understanding spatial interaction and human behavior.

*   **Option 3: Stouffer - Intervening Opportunity Model:** Samuel Stouffer developed the "Intervening Opportunity Model," which posits that the number of people migrating a given distance is directly proportional to the number of opportunities at that distance and inversely proportional to the number of intervening opportunities. This model explains migration patterns based on the availability of opportunities along the way.

*   **Option 4: Zelinsky - Mobility Transition Theory:** Wilbur Zelinsky formulated the "Mobility Transition Theory," which describes the changes in migration patterns that occur as societies develop and modernize. This theory links migration patterns to stages of demographic and economic transition.

Therefore, only Option 2 is incorrectly matched, as Lee is primarily associated with push and pull factors, not the broader Migration Systems Theory itself.