The examples and perspective in this article deal primarily with the United States and do not represent a worldwide view of the subject. (December 2012) (Learn how and when to remove this template message)
Personhood is the status of being a person. Defining personhood is a controversial topic in philosophy and law and is closely tied with legal and political concepts of citizenship, equality, and liberty. According to law, only a natural person or legal personality has rights, protections, privileges, responsibilities, and legal liability.
Personhood continues to be a topic of international debate and has been questioned critically during the abolition of human and nonhuman slavery, in theology, in debates about abortion and in fetal rights and/or reproductive rights, in animal rights activism, in theology and ontology, in ethical theory, and in debates about corporate personhood and the beginning of human personhood.
Processes through which personhood is recognized socially and legally vary cross-culturally, demonstrating that notions of personhood are not universal. Anthropologist Beth Conklin has shown how personhood is tied to social relations among the Wari' people of Rondônia, Brazil. Bruce Knauft's studies of the Gebusi people of Papua New Guinea depict a context in which individuals become persons incrementally, again through social relations. Likewise, Jane C. Goodale has also examined the construction of personhood in Papua New Guinea.
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Capacities or attributes common to definitions of personhood can include human nature, agency, self-awareness, a notion of the past and future, and the possession of rights and duties, among others. However, the concept of a person is difficult to define in a way that is universally accepted, due to its historical and cultural variability and the controversies surrounding its use in some contexts.
In philosophy, the word "person" may refer to various concepts. According to the "naturalist" epistemological tradition, from Descartes through Locke and Hume, the term may designate any human (or non-human) agent who: (1) possesses continuous consciousness over time; and (2) who is therefore capable of framing representations about the world, formulating plans and acting on them.
According to Charles Taylor, the problem with the naturalist view is that it depends solely on a "performance criterion" to determine what is an agent. Thus, other things (e.g. machines or animals) that exhibit "similarly complex adaptive behaviour" could not be distinguished from persons. Instead, Taylor proposes a significance-based view of personhood:
What is crucial about agents is that things matter to them. We thus cannot simply identify agents by a performance criterion, nor assimilate animals to machines... [likewise] there are matters of significance for human beings which are peculiarly human, and have no analogue with animals.— 
Others, such as American Philosopher Francis J. Beckwith, argue that personhood is not linked to function at all, but rather that it is the underlying personal unity of the individual.
What is crucial morally is the being of a person, not his or her functioning. A human person does not come into existence when human function arises, but rather, a human person is an entity who has the natural inherent capacity to give rise to human functions, whether or not those functions are ever attained. …A human person who lacks the ability to think rationally (either because she is too young or she suffers from a disability) is still a human person because of her nature. Consequently, it makes sense to speak of a human being’s lack if and only if she is an actual person.— 
Philosopher J. P. Moreland clarifies this point:
It is because an entity has an essence and falls within a natural kind that it can possess a unity of dispositions, capacities, parts and properties at a given time and can maintain identity through change.— 
Harry G. Frankfurt writes that, "What philosophers have lately come to accept as analysis of the concept of a person is not actually analysis of that concept at all." He suggests that the concept of a person is intimately connected to free will, and describes the structure of human volition according to first- and second-order desires:
Besides wanting and choosing and being moved to do this or that, [humans] may also want to have (or not to have) certain desires and motives. They are capable of wanting to be different, in their preferences and purposes, from what they are. Many animals appear to have the capacity for what I shall call "first-order desires" or "desires of the first order," which are simply desires to do or not to do one thing or another. No animal other than man, however, appears to have the capacity for reflective self-evaluation that is manifested in the formation of second-order desires.— 
The criteria for being a person... are designed to capture those attributes which are the subject of our most humane concern with ourselves and the source of what we regard as most important and most problematical in our lives.— Harry G. Frankfurt
What if personal identity is constituted in, and sustained through, our relations with others, such that were we to erase our relations with our significant others we would also erase the conditions of our self-intelligibility? As it turns out, this erasure... is precisely what is experimentally dramatized in the “science fiction” film, Eternal Sunshine of the Spotless Mind, a far more philosophically sophisticated meditation on personal identity than is found in most of the contemporary literature on the topic.— 
Other philosophers have defined persons in different ways. Boethius gives the definition of "person" as "an individual substance of a rational nature" ("Naturæ rationalis individua substantia"). Mary Midgley defines a “person” as being a conscious, thinking being, which knows that it is a person (self-awareness).
Philosopher Thomas I. White argues that the criteria for a person are as follows: (1) is alive, (2) is aware, (3) feels positive and negative sensations, (4) has emotions, (5) has a sense of self, (6) controls its own behaviour, (7) recognises other persons and treats them appropriately, and (8) has a variety of sophisticated cognitive abilities. While many of White's criteria are somewhat anthropocentric, some animals such as dolphins would still be considered persons. Some animal rights groups have also championed recognition for animals as "persons".
Another approach to personhood, Paradigm Case Formulation, used in Descriptive Psychology and developed by Peter Ossorio, involves the four interrelated concepts of 1) The Individual Person, 2) Deliberate Action, 3) Reality and the Real World, and 4) Language or Verbal Behavior. All four concepts require full articulation for any one of them to be fully intelligible. More specifically, a Person is an individual whose history is, paradigmatically, a history of Deliberate Action in a Dramaturgical pattern. Deliberate Action is a form of behavior in which a person (a) engages in an Intentional Action, (b) is cognizant of that, and (c) has chosen to do that. A person is not always engaged in a deliberate action but has the eligibility to do so. A human being is an individual who is both a person and a specimen of Homo sapiens. Since persons are deliberate actors, they also employ hedonic, prudent, aesthetic and ethical reasons when selecting, choosing or deciding on a course of action. As part of our "social contract" we expect that the typical person can make use of all four of these motivational perspectives. Individual persons will weigh these motives in a manner that reflects their personal characteristics. That life is lived in a “dramaturgical” pattern is to say that people make sense, that their lives have patterns of significance. The paradigm case allows for nonhuman persons, potential persons, nascent persons, manufactured persons, former persons, "deficit case" persons, and "primitive" persons. By using a paradigm case methodology, different observers can point to where they agree and where they disagree about whether an entity qualifies as a person.
A person is recognized by law as such, not because they are human, but because rights and duties are ascribed to them. The person is the legal subject or substance of which the rights and duties are attributes. An individual human being considered to be having such attributes is what lawyers call a "natural person." According to Black's Law Dictionary, a person is:
In general usage, a human being (i.e. natural person), though by statute term may include a firm, labor organizations, partnerships, associations, corporations, legal representatives, trustees, trustees in bankruptcy, or receivers.
As an application of social psychology and other disciplines, phenomena such as the perception and attribution of personhood have been scientifically studied. Typical questions addressed in social psychology are the accuracy of attribution, processes of perception and the formation of bias. Various other scientific/medical disciplines address the myriad of issues in the development of personality.
Various specific debates focus on questions about the personhood of different classes of entities.
Beginning of personhoodEdit
The beginning of human personhood is a concept long debated by religion and philosophy. With respect to abortion, 'personhood' is the status of a human being having individual human rights. The term was used by Justice Blackmun in Roe v. Wade.
A political movement in the United States seeks to define the beginning of human personhood as starting from the moment of fertilization with the result being that abortion, as well as forms of birth control that act to deprive the human embryo of necessary sustenance in implantation, could become illegal. Supporters of the movement also state that it would have some effect on the practice of in-vitro fertilization (IVF), but would not lead to the practice being outlawed. Jonathan F. Will says that the personhood framework could produce significant restrictions on IVF to the extent that reproductive clinics find it impossible to provide the services.
A representative organization within this movement is Personhood USA, a Colorado-based umbrella group with a number of state-level affiliates, which describes itself as a nonprofit Christian ministry. and seeks to ban abortion. Personhood USA was co-founded by Cal Zastrow and Keith Mason in 2008 following the Colorado for Equal Rights campaign to enact a state constitutional personhood amendment.
Proponents of the movement regard personhood as an attempt to directly challenge the Roe v. Wade U.S. Supreme Court decision, thus filling a legal void left by Justice Harry Blackmun in the majority opinion when he wrote: “If this suggestion of personhood is established, the appellant’s case, of course, collapses, for the fetus’ right to life would then be guaranteed specifically by the Amendment.”
Some medical organizations have described the potential effects of personhood legislation as potentially harmful to patients and the practice of medicine, particularly in the cases of ectopic and molar pregnancy.
Legal analysis from the Mississippi Center for Public Policy and other medical organizations hold that personhood measures will have no effect on medical intervention intended to save human life.
Susan Bordo has suggested that the focus on the issue of personhood in abortion debates has often been a means for depriving women of their rights. She writes that "the legal double standard concerning the bodily integrity of pregnant and nonpregnant bodies, the construction of women as fetal incubators, the bestowal of 'super-subject' status to the fetus, and the emergence of a father's-rights ideology" demonstrate "that the current terms of the abortion debate – as a contest between fetal claims to personhood and women's right to choose – are limited and misleading."
Others, such as Colleen Carroll Campbell, say that the personhood movement is a natural progression of society in protecting the equal rights of all members of the human species. She writes, “The basic philosophical premise behind these [personhood] amendments is eminently reasonable. And the alternative on offer – which severs humanity from personhood – is fraught with peril. If being human is not enough to entitle one to human rights, then the very concept of human rights loses meaning. And all of us — born and unborn, strong and weak, young and old — someday will find ourselves on the wrong end of that cruel measuring stick."
Father Frank Pavone agrees, adding, “Nor is this a dispute about the state imposing a religious or philosophical view. After all, your life and mine are not protected because of some religious or philosophical belief that others are required to have about us. More accurately, the law protects us precisely in spite of the beliefs of others who, in their own worldview, may not value our lives. …To support Roe vs. Wade is not merely to allow a medical procedure. It is to acknowledge that the government has the power to say who is a person and who is not. Who, then, is to limit the groups to whom it is applied? This is what makes “personhood” such an important public policy issue.
The Vatican has recently been advancing a human exceptionalist understanding of personhood theory. Catechism 2270 reads: “Human life must be respected and protected absolutely from the moment of conception. From the first moment of his existence, a human being must be recognized as having the rights of a person—among which is the inviolable right of every innocent being to life.”
In March 2007 Georgia became the first state in the nation to introduce a legislative resolution to amend the state constitution to define and recognize the personhood of the pre-born. The Georgia Catholic Conference and National Right to Life supported the effort and it failed to attract a super majority in both chambers in order to be placed on the ballot. Georgia legislators have filed a personhood resolution every session since 2007. In May 2008 Georgia Right to Life hosted the first nationwide Personhood Symposium targeting pro-life activists. This symposium was instrumental in spawning the group Personhood USA and the various state personhood efforts that followed. Voters in 46 Georgia counties approved personhood during the 2010 primary election with 75% in favor of a non-binding resolution declaring the equal rights of all human beings from conception. During the 2012 Republican primary a similar question was placed on the ballot statewide and passed with a super-majority (66%) of the vote in 158 of 159 counties.
The summer of 2008 a citizen initiated amendment was proposed for the Colorado constitution. Three attempts to enact the from-fertilization definition of personhood into U.S. state constitutions via referenda have failed. Following two attempts to enact similar changes in Colorado in 2008 and 2010, a 2011 initiative to amend the state constitution by referendum in the state of Mississippi also failed to gain approval with around 58% of voters disapproving. In an interview after the referendum, Mason ascribed the failure of the initiative to a political campaign run by Planned Parenthood.
Several state Supreme Courts have rejected challenges to personhood measures brought by opponents in states including Colorado, Ohio, Nevada, and Mississippi. In the Mississippi majority opinion, Justice Randy G. Pierce wrote:
Essentially, Plaintiffs ask this Court to render judgment upon the substance of Intervenors’ initiative – its constitutionality – in advance of the election. …This Court is without power to interfere with pre-election proposals, because to do so may place the administration of government at the footstool of the judiciary.
This Court will exercise judicial restraint and follow the reasoning of the majority of courts throughout the United States, both federal and state, which: “have articulated a policy of deference toward direct legislation processes.” …We cannot invade the territory of the Legislature or the electorate to review the substantive validity of a proposed initiative, and thereby, we will honor the maxim embodied in the constitutional mandate of separation of powers.— 
Personhood proponents in Oklahoma sought to amend the state constitution to define personhood as beginning at conception. The state Supreme Court, citing the U.S. Supreme Court's 1992 decision in Planned Parenthood v. Casey, ruled in April 2012 that the proposed amendment was unconstitutional under the federal Constitution and blocked inclusion of the referendum question on the ballot. In October 2012, the U.S. Supreme Court declined to hear an appeal of the state Supreme Court's ruling.
In 2006, a 16-year-old girl was charged in Mississippi with murder for the still-birth of her daughter on the basis that the girl had smoked cocaine while pregnant. These charges were later dismissed.
In 2014 a new national group formed, National Personhood Alliance. Founded by Daniel Becker, then President of Georgia Right to Life, the new group formed to house the growing state personhood movement and to provide educational resources and training to the burgeoning state personhood affiliates.
In 1983, the people of Ireland added the Eighth Amendment to their constitution that “acknowledges the right to life of the unborn and, with due regard to the equal right to life of the mother, guarantees in its laws to respect, and, as far as practicable, by its laws to defend and vindicate that right.”
In 1920, with the Nineteenth Amendment to the United States Constitution, women became protected against discrimination in their right to vote in the United States. In 1971, the US Supreme Court ruled in Reed v. Reed that the 14th amendment applies to women, as they are "persons" according to the US Constitution. In 2011, Supreme Court Justice Antonin Scalia argued that women do not have equal protection under the 14th amendment as "persons" saying that the Constitution's use of the gender-neutral term "Person" means that the Constitution does not require discrimination on the basis of sex, but also does not prohibit such discrimination; he said "Nobody ever thought that that's what it meant. Nobody ever voted for that. Many others, including law professor Jack Balkin disagree with this assertion. Balkin states that, at a minimum "the fourteenth amendment was intended to prohibit some forms of sex discrimination-- discrimination in basic civil rights against single women." Many local marriage laws at the time the Fourteenth Amendment was ratified (as well as when the original Constitution was ratified) had concepts of coverture and "head-and-master", which meant that women legally lost rights, including rights to ownership of property and other rights of adult participation in the political economy upon marriage; single women retained these rights, however, and voted in some jurisdictions. Also, other commentators have noted that some people who ratified the Constitution in 1787 in other contemporaneous contexts ratified state level Constitutions that saw women as Persons, required to be treated as such, including in rights such as voting. The 17th and 18th Century Quaker concept of Personhood most certainly applied to women and the prevalence of Quakers in the population of several colonies, such as New Jersey and Pennsylvania at the time the original Constitution was drafted and ratified likely influenced the use of the term "Person" in the Constitution rather than the term "Man" used in the Declaration of Independence and in the contemporaneously drafted French Constitution of 1791. The concept of personhood beginning at conception gives issues to women. Daniel Fincke states "Applying the logic to abortion she argues that an involuntarily pregnant woman has the right to refuse to let her body be used by the fetus even were we to reason that the fetus has a right to life." The personhood movement may cause many more issues that just a women's right to choose. Some fetal homicide laws have caused women to be sentenced to jail time for suspected drug use during her pregnancy that ended in a miscarriage, like the Alabama women who was sentenced to ten years for her suspected drug use.
In 1772, Somersett's Case determined that slavery was unsupported by law in England and Wales, but not elsewhere in the British Empire. In 1868, under the 14th Amendment, black men in the United States became citizens. In 1870, under the 15th Amendment, black men got the right to vote.
The legal definition of persons may include or exclude children depending on the context. In the US, regarding liability, children or minors are not legally persons because they do not satisfy the requirements for personhood under the law. However, regarding protection under the law, the US Born-Alive Infants Protection Act of 2002 provides a legal structure that those born at any gestational stage that are either breathing, have heartbeat, umbilical cord pulsation, or any voluntary muscle movement are living, individual human persons.
Some philosophers and those involved in animal welfare, ethology, the rights of animals, and related subjects, consider that certain animals should also be considered to be persons and thus granted legal personhood. Commonly named species in this context include the great apes, cetaceans, and elephants, because of their apparent intelligence and intricate social rules. The idea of extending personhood to all animals has the support of legal scholars such as Alan Dershowitz and Laurence Tribe of Harvard Law School, and animal law courses are now[when?] taught in 92 out of 180 law schools in the United States. On May 9, 2008, Columbia University Press published Animals as Persons: Essays on the Abolition of Animal Exploitation by Professor Gary L. Francione of Rutgers University School of Law, a collection of writings that summarizes his work to date and makes the case for non-human animals as persons.
Some[who?] proponents of human exceptionalism (also referred to by its critics as speciesism or human supremacism) have countered that we must institute a strict demarcation of personhood based on species membership in order to avoid the horrors of genocide (based on propaganda dehumanizing one or more ethnicities) or the injustices of forced sterilization (as occurred in many countries to people with low I.Q. scores and prisoners).
Other theorists attempt to demarcate between degrees of personhood. For example, Peter Singer's two-tiered account distinguishes between basic sentience and the higher standard of self-consciousness which constitutes personhood. Wynn Schwartz has offered a Paradigm Case Formulation of Persons as a format allowing judges to identify qualities of personhood in different entities. Julian Friedland has advanced a seven-tiered account based on cognitive capacity and linguistic mastery. Amanda Stoel suggested that rights should be granted based on a scale of degrees of personhood, allowing entities currently denied any right to be recognized some rights, but not as many.
In 1992, Switzerland amended its constitution to recognize animals as beings and not things. A decade later, Germany guaranteed rights to animals in a 2002 amendment to its constitution, becoming the first European Union member to do so. New Zealand granted basic rights to five great ape species in 1999. Their use is now forbidden in research, testing or teaching. In 2007, the parliament of the Balearic Islands, an autonomous province of Spain, passed the world's first legislation granting legal rights to all great apes.
In 2013, India's Ministry of Forests and Environment banned the importation or capture of cetaceans (whales and dolphins) for entertainment, exhibition, or interaction purposes, on the basis that "cetaceans in general are highly intelligent and sensitive" and that it "is morally unacceptable to keep them captive for entertainment." It noted that "various scientists" have argued they should be seen as "non-human persons" with commensurate rights, but did not take an official position on this, and indeed did not have the legal authority to do so.
In 2014, a hybrid, zoo-born orangutan named Sandra was termed by the court in Argentina as a "non-human subject" in an unsuccessful habeas corpus case regarding the release of the orangutan from captivity at the Buenos Aires zoo. The status of the orangutan as a "non-human subject" needs to be clarified by the court. Court cases relevant to this orangutan are continuing in 2015.
In 2015, for the first time in world history, two chimpanzees, Hercules and Leo, were thought to be "legal persons," having been granted a writ of habeas corpus. This meant their detainer, Stony Brook University, had to provide a legally sufficient reason for their imprisonment. This view was rejected and the writ was reversed by the officiating judge shortly thereafter.
Speculatively, there are several other likely categories of beings where personhood is at issue.
If alien life were found to exist, under what circumstances would they be counted as "persons"? Do we have to consider any "willing and communicative (capable to register its own will) autonomous body" in the universe, no matter the species, an individual (a person)? Do they deserve equal rights with the human race?
Artificial intelligence or lifeEdit
If artificial intelligences, intelligent and self-aware system of hardware and software, are eventually created, what criteria would determine their personhood? Likewise, at what point would human-created biological life achieve personhood?
The theoretical landscape of personhood theory has been altered recently by controversy in the bioethics community concerning an emerging community of scholars, researchers, and activists identifying with an explicitly transhumanist position, which supports morphological freedom, even if a person changed so much as to no longer be considered a member of the human species. For example, how much of a human can be artificially replaced before one loses their personhood? If people are considered persons because of their brain, then what if the brain's thought patterns, memories and other attributes could be transposed into a device? Would the patient still be considered a person after the operation?
Today, in statutory and corporate law, certain social constructs are legally considered persons. In many jurisdictions, some corporations and other legal entities are considered legal persons with standing to sue or be sued in court. This is known as legal or corporate personhood.
In 1819, the US Supreme Court ruled in Dartmouth College v. Woodward, that corporations have the same rights as natural persons to enforce contracts.
In 2006, Bolivia passed a law recognizing the rights of nature "to not be affected by mega-infrastructure and development projects that affect the balance of ecosystems and the local inhabitant communities".
In 2008, Ecuador approved a constitution to recognize that nature "...has the right to exist, persist, maintain and regenerate its vital cycles, structure, functions and its processes in evolution."
The Whanganui River of New Zealand is revered by the local Māori people as Te Awa Tupua, sometimes translated as "an integrated, living whole". Efforts to grant it special legal protection have been pursued by the Whanganui iwi since the 1870s. In 2012, an agreement to grant legal personhood to the river was signed between the New Zealand government and the Whanganui River Māori Trust. One guardian from the Crown and one from the Whanganui are responsible for protecting the river.
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Christianity is the first philosophical system to use the word "person" in its modern sense. The word "persona" was transformed from its theater use into a term with strict technical theological meaning by Tertullian in his work, Adversus Praxean ("Against Praxeas"), in order to distinguish the three "persons" of the Trinity. Subsequently, Boethius refined the word to mean "an individual substance of a rational nature." This can be re-stated as "that which possesses an intellect and a will." Thus, the word "person" was originally a theological term created and defined by Christians to explain Christian theological concepts.
The definition of Boethius as it stands can hardly be considered a satisfactory one. The words taken literally can be applied to the rational soul of man, and also the human nature of Christ. That St. Thomas accepts it is presumably due to the fact that he found it in possession, and recognized as the traditional definition. He explains it in terms that practically constitute a new definition. Individua substantia signifies, he says, substantia, completa, per se subsistens, separata ab aliia, i.e., a substance, complete, subsisting per se, existing apart from others (III, Q. xvi, a. 12, ad 2um).
If to this be added rationalis naturae, we have a definition comprising the five notes that go to make up a person: (a) substantia-- this excludes accident; (b) completa-- it must form a complete nature; that which is a part, either actually or "aptitudinally" does not satisfy the definition; (c) per se subsistens--the person exists in itself and for itself; he or she is sui juris, the ultimate possessor of his or her nature and all its acts, the ultimate subject of predication of all his or her attributes; that which exists in another is not a person; (d) separata ab aliis--this excludes the universal, substantia secunda, which has no existence apart from the individual; (e) rationalis naturae--excludes all non-intellectual supposita.To a person therefore belongs a threefold incommunicability, expressed in notes (b), (c), and (d). The human soul belongs to the nature as a part of it, and is therefore not a person, even when existing separately.— Catholic Encyclopedia, 1913, Person
- "Where it is more than simply a synonym for 'human being', 'person' figures primarily in moral and legal discourse. A person is a being with a certain moral status, or a bearer of rights. But underlying the moral status, as its condition, are certain capacities. A person is a being who has a sense of self, has a notion of the future and the past, can hold values, make choices; in short, can adopt life-plans. At least, a person must be the kind of being who is in principle capable of all this, however damaged these capacities may be in practice." Charles Taylor, "The Concept of a Person", Philosophical Papers. Volume 1. Cambridge: Cambridge University Press, 1985, 97.
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