Calculate Natural Increase, Then Sort the Pattern
Each card below shows one real country's current birth rate and death rate. Before you can sort a country, calculate its natural increase per 1,000 people (birth rate − death rate). Once you're correct, the card unlocks — then create your own groups and sort all five countries by the pattern you see in the numbers.
The Demographic Transition Model
Five stages, describing general patterns in how birth rates and death rates change as a country develops. Compare each country's current demographic pattern with the DTM stage it most closely resembles.
Compare each country's current demographic pattern with the DTM stage it most closely resembles. How does this compare with the groups you created above? Where did your groups line up, and where did they differ?
Which Country Doesn't Resemble a Typical Pattern?
One of the five countries you just sorted doesn't resemble a typical DTM stage at all. Look again at its numbers before reading on.
Qatar — An Important Exception
Qatar's death rate (about 1.3 per 1,000) is lower than any DTM stage typically describes — even lower than the pattern associated with Stage 4. That's not because nobody in Qatar ever dies. Qatar's demographic pattern is strongly shaped by its unusually young, migration-dominated population structure. Roughly 85% of Qatar's population are foreign migrant workers, overwhelmingly young and working-age, who typically arrive healthy and leave before retirement.
Qatar demonstrates an important limitation of the DTM: the model was built to describe natural change — births and deaths — within a fairly typical population structure. It has no real mechanism for migration, government policy, temporary labor systems, or a highly uneven age and sex structure, all of which can produce demographic patterns the model does not explain well. This makes it a poor fit for small, migration-dominated economies like the Gulf states, Singapore, or Luxembourg.
A Second Limitation: Eurocentric Origins
The model was developed in 1929 by the American demographer Warren Thompson, based on the historical experience of industrializing Western Europe and the United States over roughly two centuries. It assumes a particular sequence and pace: agricultural then industrial development, gradually falling mortality, then gradually falling fertility as societies urbanize.
Many countries have not followed that path. China's fertility decline was driven largely by government policy (the one-child policy), not gradual industrialization. Several East Asian economies transitioned in a few decades what took Western Europe two centuries. The model describes one historical route through demographic change — not a universal law every country must follow in the same order, for the same reasons, at the same speed.
Would You Sort These Countries the Same Way Now?
Look back at the groups you created in Step 1. Now that you've seen the model and the Qatar exception, revisit your original thinking.
Final Evaluation
Evaluate the usefulness of the Demographic Transition Model for explaining contemporary population change. Use evidence from at least two countries and explain at least one limitation of the model.
Self-Check (for your own review — not automatically graded)
Complete Investigation Summary
Everything you did in this activity, in one place.