The term population is commonly used in the realm of statistics. For a statistician, the term refers to a collection of items. Demographers use the term similarly to refer to the collections of persons alive at specified points in time that meet certain criteria. This definition of the term population connotes the specification of various
Population genetics is the study of the inheritance, distribution, and fluctuation of allele frequencies as affected by the four main forces of evolutionary genomics: natural selection, mutation, genetic drift, and migration. Population genetics is the overarching discipline of which quantitiative genetics is a crucial subfield that calculates selective effects. Ecological genetics is another subfield that
Communication campaigns have become a central component of family planning programs designed to shape social norms and individual behavior related to fertility. Communication at multiple levels (individual, family, community and mass media) has been used to heighten awareness of family planning, change attitudes toward contraceptive use, and shape norms surrounding family planning. Communication campaigns play
In the mid-twentieth century, many developing countries experienced a ‘demographic transition’: a transition from a society in which women had many births and many infant deaths, to a society with lower fertility and lower infant mortality. This pattern was particularly pronounced in China and India, which enjoyed rapid improvements in public health and steep declines