The demographic transition model and how it was developed by the demographers
Demographic transition is a model describing change in population over a particular period and it is based on two demographic characteristics; birth rates and death rates. The model was developed by Warren Thomson, an American demographer, after observing experimented changes of various countries’ birth rates and death rates over the last two decades (Wilson, 2007).
Four phases of demographic transition model
The four phases of demographic transition are; pre-transition, early transition, late transition, and post transition. During the pre-transition phase, population growth is described to be low. Crude death rates are higher than crude birth rates and so population is declining. During the early transition ...
