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identity

  (ī-dĕn'tĭ-tē) pronunciation
n., pl. -ties.
  1. The collective aspect of the set of characteristics by which a thing is definitively recognizable or known: “If the broadcast group is the financial guts of the company, the news division is its public identity” (Bill Powell).
  2. The set of behavioral or personal characteristics by which an individual is recognizable as a member of a group.
  3. The quality or condition of being the same as something else.
  4. The distinct personality of an individual regarded as a persisting entity; individuality.
  5. Information, such as an identification number, used to establish or prove a person's individuality, as in providing access to a credit account.
  6. Mathematics.
    1. An equation that is satisfied by any number that replaces the letter for which the equation is defined.
    2. Identity element.

[French identité, from Old French identite, from Late Latin identitās, from Latin idem, the same (influenced by Late Latin essentitās, being, and identidem, repeatedly), from id, it.]


 
 
Thesaurus: identity

noun

  1. The set of behavioral or personal characteristics by which an individual is recognizable: individualism, individuality, selfhood. See be.
  2. The quality or condition of being exactly the same as something else: identicalness, oneness, sameness, selfsameness. See same/different/compare.

 
Antonyms: identity

n

Definition: similarity, correspondence
Antonyms: difference, dissimilarity, opposition


 

n

Sameness; the fact that a subject, person, or thing before a court is the same as it is claimed to be.

 

The characteristics determining the individuality of a being or entity; in the constitution of national identities these characteristics may be fostered by myths. Human geographers commonly view identity as emerging from social action, or the production and reproduction of space (H. Lefebvre 1974; but see also Unwin, Transactions of the Institute of British Geographers 25); physical geographers base it on sets of significant attributes, and in both fields space and time contribute a framework of places and events in the constitution of identity. Raper and Livingstone (Transactions of the Institute of British Geographers 26) believe that ‘it is the spatio-temporal relations that develop between causal processes and the contingent nature of the environment that generate identity criteria for phenomena’.

 

All of us agree with Joseph Butler that everything is what it is and not another thing. The difficulty is to know when we have one thing and not two. A rule for telling this is a principle of individuation, or a criterion of identity for things of the kind in question. In logic, identity may be introduced as a primitive relational expression, or defined via the identity of indiscernibles. See also personal identity.

 

[Th]

1. The use of material culture to aid understanding of the definition and status of individuals and groups in the past. Such studies include the recognition of gender, rank, status, or place within society at the individual level, but may also look more widely at the relationships between contemporary cultures and the extent to which material culture is used to signal differences between social groups.

2. The way in which achaeological remains are widely used in order to promote and support particular views of contemporary personal, local, regional, and national identity, especially through the application of archaeological resource management, the deployment of public funds, and state legislation. In this sense archaeology is an extremely powerful political tool, and has been for many generations.

 

The perception of self that develops as a child differentiates from parents and family and takes a place in society. Play is regarded as an important element in the formation of identity.

 
in philosophy, problem of distinguishing sameness from change, or unity from diversity; primarily examined in connection with personal identity, universals, and the law of identity in logic. In personal identity the concern has been to determine whether anything in the body or mind remains constant; philosophers have reached no general agreement on this point. The term identity has also become increasingly important in modern psychology, largely through the work of Erik Erikson. He has used the term to designate a sense of self that develops in the course of a man's life and that both relates him to and sets him apart from his social milieu. The terms “identity crisis” and “identity confusion,” introduced by Erikson, have gained a wide usage, which often varies from their intended technical sense.


 
Psychoanalysis: Identity

Identity is not a Freudian concept. Theoreticians have defined it in very different ways: as a structure that accounts for narcissism and is part of the ego; as the ability to remain the same despite changes; as a feeling of continuity; or as the sum of representations of the self.

The importance of the notion of identity in the United States is related to its use in ego-psychology, which considers the ego as a relatively autonomous and potentially conflict-free structure. Many theories of identity adapt a portion of Freud's view of the ego. Alongside the Freudian ego, which is a structure defined by its functions, another ego—or identity related to identifications—is posited (whether inside or outside ego-psychology) and conceived of as the outcome of a process of individuation.

The first mentions of the importance of the concept of identity for clinical practice and psychopathology date from the nineteen-fifties. When it first appeared in psychoanalytic discourse, the concept of identity was associated with two approaches. The first was an attempt to extend the Freudian perspective to a general psychology that would include the ego's relationships with the surrounding world and guide research on child development. The second sought to apply psychoanalysis to pathologies, more serious than neurosis, characterized by disturbances of identity. Phyllis Greenacre evoked the internal and external faces of identity, and described their favorable and unfavorable aspects. Ralph Greenson isolated a screen-identity syndrome. Margaret Mahler viewed identity as a facet of development connected with object-relations, symbiosis, and the possibility of separation-individuation.

Two major psychoanalytical theorists have focused on identity. In 1956 Erik Erikson introduced the concept of an ego identity formed during adolescence, which served as a gauge of psychopathology. In 1961 Heinz Lichtenstein proposed giving identity the priority that the libido had for Freud. He considered it the keystone of psychopathology and eventually reframed Freudian metapsychology within a monist perspective that challenged the dualistic concept of identification.

Erikson hoped to explain human development epigenetically; the various stages of his model could not be reduced to the psychosexual level. The ego was not propelled by drives alone but must confront the challenges posed by the environment. Ego identity was the adolescent stage; it took over from various identifications and its successful establishment depended on the resolution of earlier developmental crises. Erikson's ego identity was defined by the unconscious quest for personal continuity, by the synthesis of the ego, and by group loyalties. It reflected an existential dimension of the ego. It was formed through a succession of syntheses of the ego whereby the conflicts of earlier stages were integrated. The opposite of ego identity was a diffusion of identity, a pathological syndrome in which representations of self and object are fluid and unintegrated, and oppositionalism and acting out are manifested. Otto Kernberg used this model as a diagnostic criterion for borderline states.

Lichtenstein looked upon human identity as a permanent dilemma because of the absence of any form of guarantee. The theme of an invariable identity arose from an unconscious imprint derived from the mother thanks to a process of mirror reflection. Variations on this theme constituted the feeling of identity, a creation unique to the child. Pathological developments occurred when themes emerged that were impossible to satisfy yet necessary for the maintenance of identity. In such case a subject could be caught in a paradoxical oscillation between the search for an annihilating other and an isolating autonomy. The principle of identity was the central motivation for the human individual, who was obliged to maintain an identity under more or less continual threat. This principle replaced the reality principle in Lichtenstein's account, and the drives as well as the repetition compulsion were subservient to it. Identity was assimilated to narcissism, described as a primary thematic with secondary variants. It left room for the self, the fourth metapsychological dimension and third paradigm of psychoanalysis. Identity was part of an evolutionist view that rejected dualism of any kind.

Historically speaking, theories of identity were replaced by theories of the self and by the "self psychology" of Heinz Kohut.

These are psychological theories in which the unconscious and libido are secondary. As Freud pointed out, however, unity and synthesis are superficial concepts. Drawing on such criticism, Kohut characterized Erikson's identity as a descriptive psychosocial concept. Edith Jacobson questioned the relevance and universality of so-called disturbances of identity, which she considered exaggerated. Roy Schafer interpreted the emergence of the concept of identity as symptomatic of a subjectivity stripped of a mechanistic and reifying metapsychology and hence in need of reformulation. Merely descriptive theories of identity may be said to belong to the sphere of phenomenology. When the conceptual focus is on identity, the ego is cut off from its libidinal roots. Furthermore, the view that underpins these theories is exclusively developmental and completely rejects any causality based on deferred effects.

Bibliography

Erikson, Erik. (1956). The problem of ego identity. Journal of the American Psychoanalytic Association. 56-121.

Greenacre, Phyllis. (1958). Early physical determinants in the development of the sense of identity. Journal of the American Psychoanalytic Association, 6, 612-627.

Greenson, Roger. (1958). Variations in classical psychoanalytic technique. International Journal of Psycho-Analysis, 29, 200-201.

Lichtenstein, Heinz. (1983). Identity and sexuality. The dilemma of human identity. New York: Jason Aronson.

Mahler, Margaret. (1958). Problems of identity. Journal of the American Psychoanalytic Association, 6, 131-142.

—AGNÈS OPPENHEIMER

 

Establishing the identity of spirit communicators has been a difficult problem for psychical researchers. Nineteenth-century Russian Spiritualist A. N. Aksakof conceded, "Absolute proof of spirit identity is impossible to obtain; we must be content with relative proof." Psychical researcher Charles Richet agreed, saying, "Subjective metapsychics will always be radically incapable of proving survival."

Sir Oliver Lodge suggested that the question of identity in spirit communication could be established (1) by gradually accumulated internal evidence based on thorough and meticulous records; (2) by cross correspondences, that is, the reception of unintelligible parts of one consistent and coherent message through different mediums; or (3) by information or criteria especially characteristic of the supposed communicating intelligence and, if possible, in some sense new to the world.

The role of the communicating spirit in a Spiritualist séance is somewhat complicated. The spirit acts like a prompter in the theater. The automatic script or trance speech delivered through the medium is seldom in his or her own hand or voice. The medium's organism acts like a freshly painted sieve; it tints whatever it lets through. Besides, communication is an art itself and has its own inherent difficulties. Direct voice séances, materialization in good light, lifelike personation of the departed, or the transfiguration of the medium, which afford more dramatic evidence with less opportunity for self-deception, are comparatively rare.

Many spirit entities claim to be ancient or historic personalities, and the problem of establishing the identity of such entities is almost impossible. Impersonation frequently occurs. According to the entity "Imperator," in a script of Rev. William Stainton Moses, "There is much insanity among lower spirits. The assumption of great names, when it is not the work of conscious deceivers, is the product of insanity. The spirit imagines itself to be some great one, fancies how he would act, and so projects his imaginings on the sphere of the medium's consciousness."

If the information claimed as proof of identity of famous personages is verifiable, it cannot be proved that such facts were not fraudulently gathered by the medium before the séance, that the information was inaccessible to the medium's subconscious mind, or that it was not obtained through clairvoyance. Furthermore, "Rector," another control of Stainton Moses, purportedly had the power to read books. Such power would open up a storehouse of pertinent information for so-called deceiving spirits.

Therefore, the difficulties of proof of spirit identity are almost insurmountable, a major reason why psychical research has largely abandoned the task. On a practical level, however, the human element—personal information embedded in the complexity of life—often provides convincing material to an individual who receives a communication through a medium.

One of the earliest cases of such convincing identity proof was registered by the Rev. J. B. Ferguson in his book Spirit Communion (1854). According to Ferguson's account, his cousin O. F. Parker died on August 5, 1854, in St. Louis. On the following day, in Maryville, Kentucky, Mrs. Ferguson was controlled by his spirit. Part of the communication was "My books I ordered to be sold to defray my funeral expenses, but it was not done. I am afraid, too, that there will be some flaw picked in my life policy, and if so I wish you to order my books to be sold to pay my debts, and if they fail, do not fail then from any delicacy of feeling to write to my mother, and she will have all properly settled. The policy is now in the hands of Mr. Hitchcock."

The Reverend Ferguson affirmed that until the communication the only account they had of his cousin's death was a short telegram. Because every detail was found correct, he considered the evidence of identity overwhelming.

C. H. Foster was visited in 1874 in San Francisco by the Honorable Charles E. de Long, a perfect stranger to him. Foster said he had a message for Ida and asked the visitor if this name meant anything to him. It was the name of de Long's wife. Foster asked him to bring her, and when she came he delivered the following message by means of automatic writing : "To my daughter, Ida. Ten years ago I entrusted a large sum to Thomas Madden to invest for me in certain lands. After my death he failed to account for the investment to my executors. The money was invested and 1,250 acres of land were bought, and one half of this land now belongs to you. I paid Madden on account of my share of the purchase 650 dollars. He must be made to make a settlement. Your father, Vineyard." This story proved to be true. Madden admitted it and made restitution.

An often-quoted case in Spiritualist literature is that of the steamroller suicide. The notes of Rev. Stainton Moses are as follows: "February 20, 1874. Dr. and Mrs. Speer and I dined with Mrs. Gregory, to meet the Baron du Potet, the celebrated magnetist and spiritualist. Mr. Percival was of the party. During dinner I was conscious of a strange influence in the room and mentioned the fact. The Baron had previously magnetised me very strongly, and had rendered me more than usually clairvoyant. He also recognised a spirit in the room, but thought it was the spirit of a living person. After dinner, when we got upstairs, I felt an uncontrollable inclination to write, and I asked the Baron to lay his hand upon my arm. It began to move very soon and I fell into a deep trance. As far as I can gather from the witnesses, the hand then wrote out 'I killed myself to-day.' This was preceded by a very rude drawing, and then 'Under steam-roller, Baker Street, medium passed,' (i.e., W. S. M.) was written. At the same time I spoke in the trance and rose and apparently motioned something away, saying 'Blood' several times. This was repeated and the spirit asked for prayer. Mrs. G. said a few words of prayer, and I came out of the trance at last, feeling very unwell.

"On the following day Dr. Speer and I walked down Baker Street and asked the policeman on duty if any accident had occurred there. He told us that a man had been killed by the steamroller at 9 A.M. and that he himself had helped to carry the body to Marylebone Workhouse."

The only flaw in this case is that the Pall Mall Gazette published a short account of the suicide the same evening and this might have been subconsciously seen by the medium. The name was not known, nor was it disclosed by Moses.

Dr. Isaac Funk, the New York editor, handed a letter to Lenora Piper containing the word mother. Piper gave the Christian name of Funk's mother, told him that she was walking on only one leg and asked, "Don't you remember that needle?" She had hurt herself by thrusting a needle into her foot. Piper also described a grandson, Chester, of whom Funk knew nothing. Upon inquiry, however, he found out that a grandson of that name had died 20 years earlier.

Dr. Joseph Vezzano established the identity of a materialized form in a séance given by Eusapia Palladino and describes it in Annals of Psychic Science (vol. 6, September 1907, p. 164) as follows: "In spite of the dimness of the light I could distinctly see Mme. Palladino and my fellow sitters. Suddenly I perceived that behind me was a form, fairly tall, which was leaning its head on my left shoulder and sobbing violently, so that those present could hear the sobs; it kissed me repeatedly. I clearly perceived the outlines of this face, which touched my own, and I felt the very fine and abundant hair in contact with my left cheek, so that I could be quite sure that it was a woman.

"The table then began to move, and typtology gave the name of a close family connection who was known to no-one present except myself. She had died some time before and on account of incompatability [sic] of temperament there had been serious disagreements with her. I was so far from expecting this typtological response that I at first thought this was a case of coincidence of name, but whilst I was mentally forming this reflection I felt a mouth, with warm breath, touch my left ear and whisper in a low voice in Genoese dialect, a succession of sentences, the murmur of which was audible to the sitters. These sentences were broken by bursts of weeping, and their gist was to repeatedly implore pardon for injuries done to me, with a fullness of detail connected with family affairs which could only be known to the person in question.

"The phenomenon seemed so real that I felt compelled to reply to the excuses offered me with expressions of affection, and to ask pardon in my turn if my resentment of the wrongs referred to had been excessive. But I had scarcely uttered the first syllables when two hands, with exquisite delicacy, applied themselves to my lips and prevented my continuing. The form then said to me: 'Thank you,' embraced me, kissed me, and disappeared."

According to Theodore Flournoy, this case was nothing more than the objectification of the emotional complex existing within the subconscious mind of Vezzano. There is food for thought, even for those who incline to differ, in his following remark: "The invasion or subjugation of the organism of the medium by a psychic complex belonging to a strange individual is not more easy to explain if that individuality be a spirit of the dead than if it is or belongs to one of the sitters in flesh and blood. And in this equally difficult question there is no reason to attribute to the discarnate or to the spirit world phenomena which can as readily be explained by the phenomena of our empirical world."

The pearl tie-pin case of Sir William Barrett has been frequently cited. Through the medium Hester Dowden, a Mrs. C. obtained a message spelled out on the Ouija board: "Tell mother to give my pearl tie-pin to the girl I was going to marry." The message allegedly came from a cousin of Mrs. C's, an officer who had been killed a month earlier. The name and address was returned and the whole message was thought ficitious. Six months later, however, it was discovered that the officer had been engaged to the lady. The war office returned his effects—a pearl tie-pin among them—and it was found that he put the lady's name in his will as his beneficiary.

Ernesto Bozzano recorded that in a sitting held on July 23, 1928, with the Marquise Centurione Scotto in Millesimo Castle, a voice addressed him as follows: "O Ernesto Bozzano, O my dear, my dear, I sought you in London, I sought you in Genoa, at last I find you." He immediately recognized the voice; the words carried a strong southern accent like that of Eusapia Palladino. He later noted: "This, her first manifestation, was a great revelation to me from the point of view of personal identification of the communicating spirit; because, without the faintest shadow of doubt, I recognised the person who was speaking to me the moment she pronounced my name. In life she had her own particular way of enunciating my surname, for she pronounced the two z's in an inimitable manner. Not only so, for when she spoke to me in life, she never called me simply by my surname, but invariably added my Christian name, though she never used the word 'Mr.' These small but most important idiosyncrasies of language are really what constitute the best demonstration of the real presence of the agency which affirms that it is actually present. I must add that she spoke with the identical timbre of voice which she had in life and with the very marked accent of her Italianized Neapolitan dialect."

Many visions of deceased soldiers were recorded by clairvoyants during the world wars. Mrs. E. A. Cannock of London described at a Spiritualist meeting a novel and convincing method employed by the fallen soldiers to make their identity known. In her vision they advanced in single file up the aisle, led by a young lieutenant. Each man bore on his chest a large placard with his name and the place where he lived inscribed. Cannock read the names and the place. The audience identified them one after the other. After recognition the spirit form faded and made way for the next one.

There has been no shortage of evidence of communication from servicemen who died in World War II. One of the most distinguished champions of such communication was Air Chief Marshal Lord Dowding, who was head of fighter command in the Battle of Britain. He obtained convincing evidence of spirit communication from servicemen at sittings with such famous mediums as Estelle Roberts, which he later compiled in his books Many Mansions (1943) and Lychgate (1945).

Of course, such convincing personal evidence of identity in spirit communications does not reach the level demanded by scientific criteria. However, thousands of people from all walks of life have been assured of and based their affirmation of survival upon such impressive clairaudient and clairvoyant messages through a medium or psychic.

Sources:

Baird, Alexander T. One Hundred Cases for Survival After Death. New York: Bernard Ackerman, 1944.

Christopher, Milbourne. Search for the Soul: An Insider's Report on the Continuing Quest by Psychics and Scientists for Evidence of Life After Death. New York: Thomas Y. Crowell, 1979.

Currie, Ian. You Cannot Die: The Incredible Findings of a Century of Research on Death. New York: Methuen; London: Hamlyn, 1978.

Ducasse, C. J. Paranormal Phenomena, Science, and Life After Death. New York: Parapsychology Foundation, 1969.

Garrett, Eileen J., ed. Does Man Survive Death? A Symposium. New York: Helix Press, 1957.

Hart, Hornell. The Enigma of Survival: The Case For and Against An After Life. Springfield, Ill.: Charles Thomas, 1959.

Hyslop, James H. Contact With the Other World: The Latest Evidence as to Communication with the Dead. New York: Century, 1919.

Kastenbaum, Robert, ed. Between Life and Death. New York: Springer, 1979.

Murphy, Gardner. Three Papers on the Survival Problem. New York: American Society for Psychical Research, 1945.

Richmond, Kenneth. Evidence of Identity. London: G. Bell, 1939.

Salter, W. H. Zoar; or, The Evidence of Psychical Research Concerning Survival. London: Sidwick & Jackson, 1961.

 

The aggregate of characteristics by which an individual is recognized.

 
Wikipedia: identity (mathematics)
For other senses of this word, see identity (disambiguation).

In mathematics, the term identity has several important uses:

  • An identity is an equality that remains true regardless of the values of any variables that appear within it, to distinguish it from an equality which is true under more particular conditions. For this, the symbol ≡ is sometimes used. (However, this can be ambiguous since the same symbol can also be used for a congruence relation.)
  • In algebra, an identity or identity element of a set S with a binary operation is an element e which combined with any element s of S produces s.
  • The identity function from a set S to itself, often denoted id or idS, such that id(x) = x for all x in S.
  • In linear algebra, the identity matrix of size n is the n-by-n square matrix with ones on the main diagonal and zeros elsewhere.

Examples

Identity relation

A common example of the first meaning is the trigonometric identity

\sin ^2 \theta +  \cos ^2 \theta = 1\,

which is true for all real values of θ (since the real numbers \Bbb{R} are the domain of sin and cos), as opposed to

\cos \theta = 1,\,

which is true only for some values of θ, not all. For example, the latter equation is true when \theta = 0,\,, false when \theta = 2\,

See also list of mathematical identities.

Identity element

The concepts of "additive identity" and "multiplicative identity" are central to the Peano axioms. The number 0 is the "additive identity" for integers, real numbers, and complex numbers. For the real numbers, for all a\in\Bbb{R},

0 + a = a,\,
a + 0 = a,\, and
0 + 0 = 0.\,

Similarly, The number 1 is the "multiplicative identity" for integers, real numbers, and complex numbers. For the real numbers, for all a\in\Bbb{R},

1 \times a = a,\,
a \times 1 = a,\, and
1 \times 1 = 1.\,

Identity function

A common example of an identity function is the identity permutation, which sends each element of the set {1,2,...,n} to itself.

Comparison

These meanings are not mutually exclusive; for instance, the identity permutation is the identity element in the set of permutations of {1,2,...,n} under composition.

External links

  • EquationSolver - A webpage that can test a suggested identity and return a true/false "verdict".

 
Translations: Translations for: Identity

Dansk (Danish)
n. - Identitet

idioms:

  • identity card    ID-kort, identitetskort, legitimationskort
  • identity crisis    identitetskrise
  • identity parade    konfrontation, identifikationsparade

Nederlands (Dutch)
identiteit, volmaakte gelijkenis

Français (French)
n. - identité

idioms:

  • identity card    carte d'identité
  • identity crisis    crise d'identité
  • identity parade    (GB) séance d'identification

Deutsch (German)
n. - Identität, Übereinstimmung

idioms:

  • identity card    Personalausweis
  • identity crisis    Identitätskrise
  • identity parade    Gegenüberstellung zur Identifizierung

Ελληνική (Greek)
n. - ταυτότητα, ομοιότητα

idioms:

  • identity card    δελτίο (αστυνομικής) ταυτότητας
  • identity crisis    κρίση ταυτότητας
  • identity parade    ομαδική παρουσίαση ατόμων για αναγνώριση υπόπτου

Italiano (Italian)
identità

idioms:

  • identity card    carta di identità
  • identity crisis    crisi di identità
  • identity parade    confronto all'americana

Português (Portuguese)
n. - identidade (f)

idioms:

  • identity card    cédula (f) de identidade
  • identity crisis    crise (f) de identidade
  • identity parade    fila (f) de identificação

Русский (Russian)
идентичность, подлинность, личность, тождество (мат.), опознавательный

idioms:

  • identity card    удостоверение личности
  • identity crisis    личностный кризис (у подростков)
  • identity parade    очная ставка

Español (Spanish)
n. - identidad, igualdad

idioms:

  • identity card    carné o cédula de identidad
  • identity crisis    crisis de identidad
  • identity parade    careo de sospechosos, rueda de presos o de reconocimiento o de identificación

Svenska (Swedish)
n. - identitet (äv. matem.), överensstämmelse

中文(简体) (Chinese (Simplified))
同一性, 一致, 身份

idioms:

  • identity card    身份证
  • identity crisis    性别认同危机
  • identity parade    排队辨认嫌疑犯

中文(繁體) (Chinese (Traditional))
n. - 同一性, 一致, 身份

idioms:

  • identity card    身份證
  • identity crisis    性別認同危機
  • identity parade    排隊辨認嫌疑犯

한국어 (Korean)
n. - 동일함, 신원, 본인, 항등식

日本語 (Japanese)
n. - 同一であること, アイデンティティ, 身元証明の手段, 自分自身であること, 主体性, 独自性, 個性, 正体, 身元

idioms:

  • identity card    身分証明書
  • identity crisis    同一性の危機
  • identity parade    犯人捜しの為に容疑者たちを列に並ばせる事

العربيه (Arabic)
‏(الاسم) شخصيه, هويه‏

עברית (Hebrew)
n. - ‮זהות, היות דומה, היות שווה‬


 
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