
A nuclear family, elementary family, cereal-packet family or
conjugal family
A conjugal family is a nuclear family that may consist of a married couple and their children (by birth or adoption) or a couple who are unmarried or underage. Conjugal means there is a marriage relationship. The family relationship is principally ...
is a
family
Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...
group consisting of parents and their
children (one or more), typically living in one
home residence. It is in contrast to a
single-parent family, the larger
extended family, or a family with more than two parents. Nuclear families typically center on a
heterosexual married
Marriage, also called matrimony or wedlock, is a culturally and often legally recognized union between people called spouses. It establishes rights and obligations between them, as well as between them and their children, and between t ...
couple which may have any number of children. There are differences in definition among observers. Some definitions allow only biological children that are full-blood siblings and consider adopted or half and step siblings a part of the
immediate family, but others allow for a step-parent and any mix of dependent children, including stepchildren and adopted children. Some sociologists and anthropologists consider the nuclear family as the most basic form of social organization, while others consider the extended family structure to be the most common family structure in most cultures and at most times.
The term ''nuclear family'' was popularized in the 20th century. In the United States, it became the most common form of family structure in the 1950s, 1960s and 1970s. Since that time, the number of North American nuclear families is gradually decreasing, while the number of alternative family formations has increased; this phenomenon is generally opposed by members of such philosophies as
social conservatism or
familialism, which consider the nuclear family structure important.
History
DNA extracted from bones and teeth discovered in a 4,600-year-old
Stone Age burial site in Germany has provided the earliest evidence for the social recognition of a family consisting of two parents with multiple children.
Historians
Alan Macfarlane and
Peter Laslett, among other European researchers, say that nuclear families have been a primary arrangement in England since the 13th century. This primary arrangement was different from the normal arrangements in Southern Europe, in parts of Asia, and the Middle East where it was common for young adults to remain in or marry into the family home. In England, multi-generational households were uncommon because young adults would save enough money to move out, into their own household once they married. Sociologist Brigitte Berger argued, "the young nuclear family had to be flexible and mobile as it searched for opportunity and property. Forced to rely on their own ingenuity, its members also needed to plan for the future and develop bourgeois habits of work and saving." Berge also mentions that this could be one of the reasons why the Industrial Revolution began in England and other Northwest European countries. However, the historicity of the nuclear family in England has been challenged by Cord Oestmann.
Family structures of a mixing couple and their children were present in Western Europe and New England in the 17th century, influenced by church and theocratic governments. With the emergence of
proto-industrialization
Proto-industrialization is the regional development, alongside commercial agriculture, of rural handicraft production for external markets.
The term was introduced in the early 1970s by economic historians who argued that such developments in p ...
and early capitalism, the nuclear family became a financially viable social unit.
Usage of the term
The term ''nuclear family'' first appeared in the early 20th century.
Merriam-Webster
Merriam-Webster, Inc. is an American company that publishes reference books and is especially known for its dictionaries. It is the oldest dictionary publisher in the United States.
In 1831, George and Charles Merriam founded the company as ...
dates the term back to 1924,
while the ''
Oxford English Dictionary
The ''Oxford English Dictionary'' (''OED'') is the first and foundational historical dictionary of the English language, published by Oxford University Press (OUP). It traces the historical development of the English language, providing a com ...
'' has a reference to the term from 1925; thus it is relatively new. While the phrase dates approximately from the
Atomic Age, the term "nuclear" is not used here in the context of
nuclear warfare
Nuclear warfare, also known as atomic warfare, is a theoretical military conflict or prepared political strategy that deploys nuclear weaponry. Nuclear weapons are weapons of mass destruction; in contrast to conventional warfare, nucle ...
,
nuclear power,
nuclear fission
Nuclear fission is a nuclear reaction, reaction in which the atomic nucleus, nucleus of an atom splits into two or more smaller atomic nucleus, nuclei. The fission process often produces gamma ray, gamma photons, and releases a very large ...
or
nuclear fusion; rather, it arises from a more general use of the noun ''nucleus'', itself originating in the
Latin
Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power ...
''nux'', meaning "nut", i.e. the core of something – thus, the nuclear family refers to all members of the family being part of the same core rather than directly to
atomic weapons
A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or a combination of fission and fusion reactions ( thermonuclear bomb), producing a nuclear explosion. Both bo ...
.
In its most common usage, the term ''nuclear family'' refers to a household consisting of a
father, a
mother and their
children all in one household dwelling.
George Murdock, an observer of families, offered an early description:
Many individuals are part of two nuclear families in their lives: the family of origin in which they are offspring, and the family of procreation in which they are a parent.
Alternative definitions have evolved to include family units headed by
same-sex parents
and perhaps additional adult relatives who take on a cohabiting parental role; in the latter case, it also receives the name of
conjugal family
A conjugal family is a nuclear family that may consist of a married couple and their children (by birth or adoption) or a couple who are unmarried or underage. Conjugal means there is a marriage relationship. The family relationship is principally ...
.
Compared with extended family
An
extended group consists of non-nuclear (or "non-immediate") family members considered together with nuclear (or "immediate") family members. When extended family is involved they also influence children's development just as much as the parents would on their own.
In an extended family resources are usually shared among those involved, adding more of a community aspect to the family unit. This is not limited to the sharing of objects and money, but includes sharing time. For example, extended family such as
grandparents can watch over their grandchildren allowing parents to continue and pursue careers and creating a healthy and supportive environment the children to grow up in and allows the parents to have much less stress.
Extended families help keep the kids in the family healthier because of all the resources the kids get now that they have other individuals able to help them and support them as they grow up.
Changes to family formation
In 2005, information from the
United States Census Bureau
The United States Census Bureau (USCB), officially the Bureau of the Census, is a principal agency of the U.S. Federal Statistical System, responsible for producing data about the American people and economy
An economy is an area of th ...
showed that 70% of children in the US live in two-parent families,
with 66% of those living with parents who were married, and 60% living with their biological parents. The information also explained that "the figures suggest that the tumultuous shifts in family structure since the late 1960s have leveled off since 1990".
When considered separately from couples without children,
single-parent families, and unmarried couples with children, the United States nuclear families appear to constitute a minority of households – with a rising prevalence of other family arrangements. In 2000, nuclear families with the original biological parents constituted roughly 24.10% of American households, compared with 40.30% in 1970.
Roughly two-thirds of all children in the United States will spend at least some time in a single-parent household. According to some sociologists, "
he nuclear familyno longer seems adequate to cover the wide diversity of household arrangements we see today." (Edwards 1991; Stacey 1996). A new term has been introduced, ''postmodern family'', intended to describe the great variability in family forms, including single-parent families and couples without children."
Nuclear family households are now less common compared to household with couples without children, single-parent families, and unmarried couples with children.
In the UK, the number of nuclear families fell from 39.0% of all households in 1968 to 28.0% in 1992. The decrease accompanied an equivalent increase in the number of single-parent households and in the number of adults living alone.
Professor Wolfgang Haak of
Adelaide University, detects traces of the nuclear family in prehistoric Central Europe. A 2005 archeological dig in Elau in Germany, analyzed by Haak, revealed genetic evidence suggesting that the 13 individuals found in a grave were closely related. Haak said, "By establishing the genetic links between the two adults and two children buried together in one grave, we have established the presence of the classic nuclear family in a prehistoric context in Central Europe.... Their unity in death suggest
a unity in life."
[
] This paper does not regard the nuclear family as "natural" or as the only model for human family life. "This does not establish the elemental family to be a universal model or the most ancient institution of human communities. For example, polygamous unions are prevalent in ethnographic data and models of household communities have apparently been involving a high degree of complexity from their origins."
Lastly, large shifts in the financial landscape for families has made the historically middle class, traditional, nuclear family structure significantly more risky, expensive and unstable. The expenses associated with raising a family; notably housing, medical care and education, have all increased very rapidly, particularly since the 1950s. Since then middle class incomes have stagnated or even declined, whilst living costs have soared to the point where even two-income households are now unable to offer the same level of financial stability that was once possible under the single income nuclear family household of the 1950s.
Effect on family size
As a
fertility factor, single nuclear family households generally have a higher number of children than co-operative living arrangements according to studies from both the
Western world
The Western world, also known as the West, primarily refers to the various nations and states in the regions of Europe, North America, and Oceania. and
India
India, officially the Republic of India ( Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the ...
.
There have been studies done that shows a difference in the number of children wanted per household according to where they live. Families that live in rural areas wanted to have more kids than families in urban areas. A study done in Japan between October 2011 and February 2012 further researched the effect of area of residence on mean desired number of children. Researchers of the study came to the conclusion that the women living in rural areas with larger families were more likely to want more children, compared to women that lived in urban areas in Japan.
"Traditional" North American family
For
social conservatism in the
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., federal district, five ma ...
and
Canada
Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tota ...
, the idea that the nuclear family is
tradition
A tradition is a belief or behavior (folk custom) passed down within a group or society with symbolic meaning or special significance with origins in the past. A component of cultural expressions and folklore, common examples include holidays ...
al is a very important aspect, where