Although early western
cultural anthropologists and
sociologists considered family and
kinship to be universally associated with relations by "blood" (based on ideas common in their own cultures) later research According to the work of scholars
Max Weber,
Alan Macfarlane,
Steven Ozment,
Jack Goody and
Peter Laslett, the huge transformation that led to modern marriage in Western democracies was "fueled by the religio-cultural value system provided by elements of
Judaism, early
Christianity,
Roman Catholic canon law and the
Protestant Reformation". Much sociological,
historical and
anthropological research dedicates itself to the understanding of this variation, and of changes in the family that form over time. Levitan claims: Nonetheless, the results of
Steven Ruggles' assessment of world census data suggest "nineteenth-century Northwest Europe and North America did not have exceptionally simple or nuclear family structure."
Multigenerational family Historically, the most common family type was one in which grandparents, parents, and children lived together as a single unit. For example, the household might include the owners of a farm, one (or more) of their adult children, the adult child's spouse, and the adult child's own children (the owners' grandchildren). Members of the extended family are not included in this family group. Sometimes, "skipped" generation families, such as a grandparents living with their grandchildren, are included. ,
Västerbotten, Sweden, early 20th century|left In the US, this arrangement declined after
World War II, reaching a low point in 1980, when about one out of every eight people in the US lived in a multigenerational family. The increasing popularity is partly driven by
demographic changes and the economic shifts associated with the
Boomerang Generation.
Conjugal (nuclear) family The term "
nuclear family" is commonly used to refer to conjugal families. A "
conjugal" family includes only the spouses and unmarried children who are not of age. Some sociologists distinguish between conjugal families (relatively independent of the kindred of the parents and of other families in general) and nuclear families (which maintain relatively close ties with their kindred). Other family structures – with (for example)
blended parents,
single parents, and
domestic partnerships – have begun to challenge the normality of the nuclear family.
Single-parent family A
single-parent family consists of one parent together with their children, where the parent is either widowed, divorced (and not remarried), or never married. The parent may have
sole custody of the children, or separated parents may have a
shared-parenting arrangement where the children divide their time (possibly equally) between two different single-parent families or between one single-parent family and one
blended family. As compared to sole custody, physical, mental and social well-being of children may be improved by shared-parenting arrangements and by children having greater access to both parents. The number of single-parent families have been increasing due to the divorce rate climbing drastically during the years 1965–1995, and about half of all children in the United States will live in a single-parent family at some point before they reach the age of 18. Most single-parent families are headed by a mother, but the number of single-parent families headed by fathers is increasing.
Matrifocal family A "matrifocal" family consists of a
mother and her children. Generally, these children are her biological offspring, although adoption of children occurs in nearly every society. This kind of family occurs commonly where women have the resources to rear their children by themselves, or where men are more
mobile than women. As a definition, "a family or domestic group is matrifocal when it is centred on a woman and her children. In this case, the father(s) of these children are intermittently present in the life of the group and occupy a secondary place. The children's mother is not necessarily the wife of one of the children's fathers." The name, matrifocal, was coined in Guiana but it is defined differently in other countries. For Nayar families, the family have the male as the "center" or the head of the family, either the step-father/father/brother, rather than the mother. Historically,
extended families were the basic family unit in the
Catholic culture and
countries (such as
Southern Europe and
Latin America), and in Asian,
Middle Eastern and
Eastern Orthodox countries. The family of choice may or may not include some or all of the members of the family of origin. This family is not one that follows the "normal" familial structure like having a father, a mother, and children. This is family as a group of people that rely on each other like a family of origin would. This terminology stems from the fact that many
LGBT individuals, upon
coming out, face rejection or shame from the families they were raised in. The term family of choice is also used by individuals in the
12 step communities, who create close-knit "family" ties through the recovery process. As a family system, families of choice face unique issues. Without legal safeguards, families of choice may struggle when medical, educational or governmental institutions fail to recognize their legitimacy. Also in sociology, particularly in the works of social psychologist
Michael Lamb,
traditional family refers to "a middle-class family with a bread-winning father and a stay-at-home mother, married to each other and raising their biological children," and
nontraditional to exceptions to this rule. Most of the US households are now non-traditional under this definition. Critics of the term "traditional family" point out that in most cultures and at most times, the
extended family model has been most common, not the nuclear family, though it has had a longer tradition in England than in other parts of Europe and Asia which contributed large numbers of immigrants to the Americas. The nuclear family became the most common form in the U.S. in the 1960s and 1970s. In terms of communication patterns in families, there are a certain set of beliefs within the family that reflect how its members should communicate and interact. These family communication patterns arise from two underlying sets of beliefs. One being conversation orientation (the degree to which the importance of communication is valued) and two, conformity orientation (the degree to which families should emphasize similarities or differences regarding attitudes, beliefs, and values). Blended families is complex, ranging from stepfamilies to cohabitating families (an individual living with guardians who are not married with step or half siblings). While it is not too different from stepfamilies, cohabiting families pose a prevalent psychological effect on youths. Some adolescents would be prone to "acts of delinquency," and experiencing problems in school ranging from a decrease in academic performance to increased problematic behavior. It coincides with other researches on the trajectories of stepfamilies where some experienced familyhood, but others lacking connection. Emotional detachment from members within stepfamilies contributes to this uncertainty, furthering the tension that these families may establish. The transition from an old family to a new family that falls under blended families would also become problematic as the activities that were once performed in the old family may not transfer well within the new family for adolescents.
Monogamous family A monogamous family is based on a legal or social
monogamy. In this case, an individual has only one (official) partner during their lifetime or at any one time (i.e.
serial monogamy). This means that a person may not have several different legal spouses at the same time, as this is usually prohibited by
bigamy laws, (the act of entering into a marriage with one person while still legally married to another) in jurisdictions that require monogamous marriages.
Polygamous family , Australia, 1904
Polygamy is a marriage that includes more than two partners. When a man is married to more than one wife at a time, the relationship is called
polygyny; and when a woman is married to more than one husband at a time, it is called
polyandry. If a marriage includes multiple husbands and wives, it can be called
polyamory,
group or conjoint marriage.
Polygyny is a form of plural marriage, in which a man is allowed more than one wife. In modern countries that permit polygamy, polygyny is typically the only form permitted. Polygyny is practiced primarily (but not only) in parts of the Middle East and Africa; and is often associated with
Islam, however, there are certain conditions in Islam that must be met to perform polygyny.
Polyandry is a form of marriage whereby a woman takes two or more husbands at the same time. Fraternal polyandry, where two or more brothers are married to the same wife, is a common form of polyandry. Polyandry was traditionally practiced in areas of the Himalayan mountains, among Tibetans in
Nepal, in parts of China and in parts of northern India. Polyandry is most common in societies marked by high male mortality or where males will often be apart from the rest of the family for a considerable period of time. ==Kinship terminology==