Family demography is a subfield of demography and is the study of the changing nature of intergenerational and gender ties that bind individuals into households and family units. The core of family demography uses basic demo graphic information collected about household members, including the numbers of members, their relationships to each other, and each per
Modern demography seeks to characterize populations or subgroups of populations based upon statistical commonalities or differences between them. Clearly, some of these may be largely cultural (e.g., age of marriage, total fertility, socioeconomic status) or largely biological (e.g., resistance to particular strains of malaria, skin cancer risk, mean height), while others may be almost entirely