Partible paternity or shared paternity is a cultural conceptualization of paternity according to which a child is understood to have more than one father; for example, because of an ideology that sees pregnancy as the cumulative result of multiple acts of sexual intercourse. [1] In societies with the concept of partible paternity this often results in the nurture of a child being shared by multiple fathers in a form of polyandric relation to the mother, although this is not always the case. [2]
All cultures recognize different types of fatherhood – for example the distinction between biological fatherhood and legal fatherhood, and the corresponding social roles of genitor and pater. [3] The concept of partible paternity differs from such a distinction because it considers all men who have had sexual intercourse with a woman immediately prior to and during her pregnancy to have contributed biological material to the child, and to have a corresponding legal or moral responsibility to care for it.
Up to 70% of Amazonian cultures may have believed in the principle of partible paternity, [4] and it has been described in at least 18 different societies including the Araweté, Mehinaku, Tapirapé, Xokleng, and Wari', [5] [6] along with the Aché and Kulina. [7]
Anthropologist Stephen Beckerman, who has studied ideologies and practices of fatherhood among the Bari people of Venezuela, argues that partible paternity is adaptive, because it gives an advantage to children who have multiple male providers. He suggests a Bari child is 16% more likely than a single-fathered child to survive to the age of 15, probably due to improved nutrition. Among the Aché people of Eastern Paraguay, having multiple fathers appears to protect children from violence, the main cause of infant and child mortality. [3] [5] [8] [9] [10] Evolutionary psychologist David Buss suggests that there must also be a downside to partible paternity, in the form of sexual jealousy. [11] It has been suggested that societies with partible paternity lack sexual jealousy, as men do not have to worry about paternal uncertainty; however, this view has also been subject to criticism and it has been argued sexual jealousy is in fact still present in partible paternity societies. [12] [13]
Partible paternity have also been suggested to be used by some males to benefit themselves by increasing their access to extramarital partners and to formalise alliances with other males by allowing sexual access to their wives, as well as sharing paternity with close kin members. [14]
In ancient Hawaii, partible paternity was called poʻolua . Hawaiian king Kamehameha I is said to have had two fathers. [15]
In The Gallic Wars , Book one, Chapter 14, Julius Caesar writes about the Celts who inhabited Kent in England: "Ten and even twelve have wives common to them, and particularly brothers among brothers, and parents among their children; but if there be any issue by these wives, they are reputed to be the children of those by whom respectively each was first espoused when a virgin."
An example of biological shared paternity is the wood turtle. Though very rare, this can also occur due to polyspermy and superfecundation for other species, including humans. The offspring will be a chimera, with a fusion of DNA from three or more biological parents. [16] [17]
Polyandry is a form of polygamy in which a woman takes two or more husbands at the same time. Polyandry is contrasted with polygyny, involving one male and two or more females. If a marriage involves a plural number of "husbands and wives" participants of each gender, then it can be called polygamy, group or conjoint marriage. In its broadest use, polyandry refers to sexual relations with multiple males within or without marriage.
A father is the male parent of a child. Besides the paternal bonds of a father to his children, the father may have a parental, legal, and social relationship with the child that carries with it certain rights and obligations. An adoptive father is a male who has become the child's parent through the legal process of adoption. A biological father is the male genetic contributor to the creation of the infant, through sexual intercourse or sperm donation. A biological father may have legal obligations to a child not raised by him, such as an obligation of monetary support. A putative father is a man whose biological relationship to a child is alleged but has not been established. A stepfather is a male who is the husband of a child's mother and they may form a family unit, but who generally does not have the legal rights and responsibilities of a parent in relation to the child.
A parent is a caregiver of the offspring in their own species. In humans, a parent is the caretaker of a child. A biological parent is a person whose gamete resulted in a child, a male through the sperm, and a female through the ovum. Biological parents are first-degree relatives and have 50% genetic meet. A female can also become a parent through surrogacy. Some parents may be adoptive parents, who nurture and raise an offspring, but are not biologically related to the child. Orphans without adoptive parents can be raised by their grandparents or other family members.
Infidelity is a violation of a couple's emotional and/or sexual exclusivity that commonly results in feelings of anger, sexual jealousy, and rivalry.
A paternal bond is the human bond between a father and his child.
David Michael Buss is an American evolutionary psychologist at the University of Texas at Austin, researching human sex differences in mate selection. He is considered one of the founders of evolutionary psychology.
Parental investment, in evolutionary biology and evolutionary psychology, is any parental expenditure that benefits offspring. Parental investment may be performed by both males and females, females alone or males alone. Care can be provided at any stage of the offspring's life, from pre-natal to post-natal.
Sexual jealousy is a special form of jealousy in sexual relationships, based on suspected or imminent sexual infidelity. The concept is studied in the field of evolutionary psychology.
Sociology of the family is a subfield of the subject of sociology, in which researchers and academics study family structure as a social institution and unit of socialization from various sociological perspectives. It can be seen as an example of patterned social relations and group dynamics.
In evolutionary psychology, the Cinderella effect is the phenomenon of higher incidences of different forms of child abuse and mistreatment by stepparents than by biological parents. It takes its name from the fairy tale character Cinderella, which is about a girl who is mistreated by her stepsisters and stepmother. Evolutionary psychologists describe the effect as a byproduct of a bias towards kin, and a conflict between reproductive partners of investing in young that are unrelated to one partner.
Human male sexuality encompasses a wide variety of feelings and behaviors. Men's feelings of attraction may be caused by various physical and social traits of their potential partner. Men's sexual behavior can be affected by many factors, including evolved predispositions, individual personality, upbringing, and culture. While most men are heterosexual, significant minorities are homosexual or varying degrees of bisexual.
Monogamous pairing in animals refers to the natural history of mating systems in which species pair bond to raise offspring. This is associated, usually implicitly, with sexual monogamy.
Extra-pair copulation (EPC) is a mating behaviour in monogamous species. Monogamy is the practice of having only one sexual partner at any one time, forming a long-term bond and combining efforts to raise offspring together; mating outside this pairing is extra-pair copulation. Across the animal kingdom, extra-pair copulation is common in monogamous species, and only a very few pair-bonded species are thought to be exclusively sexually monogamous. EPC in the animal kingdom has mostly been studied in birds and mammals. Possible benefits of EPC can be investigated within non-human species, such as birds.
In genetics, a non-paternity event is when someone who is presumed to be an individual's father is not in fact the biological father. This presumption may be on the part of the individual, the parents, or the attending midwife, physician or nurse. Non-paternity may result from sperm donation, undisclosed adoption, heteropaternal superfecundation, promiscuity, paternity fraud, or sexual assault, as well as medical mistakes, for example, mixups during procedures such as in vitro fertilization and artificial insemination. Where there is uncertainty, the most reliable technique for establishing paternity is genetic testing; however, there is still a risk of error due to the potential for gene mutations or scoring errors.
Sex at Dawn: The Prehistoric Origins of Modern Sexuality is a 2010 book about the evolution of human mating systems by Christopher Ryan and Cacilda Jethá. In opposition to what the authors see as the "standard narrative" of human sexual evolution, they contend that having multiple sexual partners was common and accepted in the environment of evolutionary adaptedness. The authors contend that mobile, self-contained groups of hunter-gatherers were the norm for humans before agriculture led to high population density. Before agriculture, according to the authors, sex was relatively promiscuous and paternity was not a concern. This dynamic is similar to the mating system of bonobos. According to the book, sexual interactions strengthened the bond of trust in the groups. Far from causing jealousy, social equilibrium and reciprocal obligation were strengthened by playful sexual interactions.
Robin Baker is a British novelist, popular science writer, lecturer and broadcaster. A best-selling author in the field of sexual biology his books have been translated into 27 different languages. These include the international bestseller Sperm Wars which was based on his own lab's original research on human sexuality. His work and ideas on the evolution of human behaviour have been featured in many radio and television programmes around the world.
In biology, paternal care is parental investment provided by a male to his own offspring. It is a complex social behaviour in vertebrates associated with animal mating systems, life history traits, and ecology. Paternal care may be provided in concert with the mother or, more rarely, by the male alone.
In behavioral ecology, polyandry is a class of mating system where one female mates with several males in a breeding season. Polyandry is often compared to the polygyny system based on the cost and benefits incurred by members of each sex. Polygyny is where one male mates with several females in a breeding season . A common example of polyandrous mating can be found in the field cricket of the invertebrate order Orthoptera. Polyandrous behavior is also prominent in many other insect species, including the red flour beetle and the species of spider Stegodyphus lineatus. Polyandry also occurs in some primates such as marmosets, mammal groups, the marsupial genus' Antechinus and bandicoots, around 1% of all bird species, such as jacanas and dunnocks, insects such as honeybees, and fish such as pipefish.
Father absence occurs when parents separate and the father no longer lives with his children. Parental separation has been proven to affect a child's development and behaviour. Early parental divorce has been associated with greater internalising and externalising behaviours in the child, while divorce later in childhood or adolescence may dampen academic performance.
Paper abortion, also known as a financial abortion or a statutory abort, is the proposed ability of the biological father, before the birth of the child, to opt out of any rights, privileges, and responsibilities toward the child, including financial support. By this means, before a child is born, a man would be able to absolve himself of both the privileges and demands of fatherhood.