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In psychology, sociology, and anthropology, identity is a person's conception and expression of their own (self-identity) and others' individuality or group affiliations (such as national identity and cultural identity). ==Description== One may define ''identity'' as the distinctive characteristic belonging to any given individual, or shared by all members of a particular social category or group. Identity may be distinguished from identification; identity is a label, whereas identification refers to the classifying act itself. Identity is thus best construed as being both relational and contextual, while the act of identification is best viewed as inherently processual.〔Rummens, J. (1993). Personal Identity and Social Structure in Sint Maartin/Saint Martin: a Plural Identities Approach. Unpublished Thesis/Dissertation: York University.〕 However, the formation of one's identity occurs through one's identifications with significant others (primarily with parents and other individuals during one's biographical experiences, and also with "groups" as they are perceived). These others may be benign - such that one aspires to their characteristics, values and beliefs (a process of idealistic-identification), or malign - when one wishes to dissociate from their characteristics (a process of defensive contra-identification) (Weinreich & Saunderson 2003, Chapter 1, pp 54–61). A ''psychological identity'' relates to self-image (one's mental model of oneself), self-esteem, and individuality. Consequently, Weinreich gives the definition "A person's identity is defined as the totality of one's self-construal, in which how one construes oneself in the present expresses the continuity between how one construes oneself as one was in the past and how one construes oneself as one aspires to be in the future"; this allows for definitions of aspects of identity, such as: "One's ethnic identity is defined as that part of the totality of one's self-construal made up of those dimensions that express the continuity between one's construal of past ancestry and one's future aspirations in relation to ethnicity" (Weinreich, 1986a). Gender identity forms an important part of identity in psychology, as it dictates to a significant degree how one views oneself both as a person and in relation to other people, ideas and nature. Other aspects of identity, such as racial, religious, ethnic, occupational… etc. may also be more or less significant – or significant in some situations but not in others (Weinreich & Saunderson 2003 pp26–34). In cognitive psychology, the term "identity" refers to the capacity for self-reflection and the awareness of self. The inclusiveness of Weinreich's definition (above) directs attention to the totality of one's identity at a given phase in time, and assists in elucidating component aspects of one's total identity, such as one's gender identity, ethnic identity, occupational identity and so on. The definition readily applies to the young child, to the adolescent, to the young adult, and to the older adult in various phases of the life cycle. Depending on whether one is a young child or an adult at the height of one's powers, how one construes oneself as one was in the past will refer to very different salient experiential markers. Likewise, how one construes oneself as one aspires to be in the future will differ considerably according to one's age and accumulated experiences. (Weinreich & Saunderson, (eds) 2003, pp 26–34). Sociology places some explanatory weight on the concept of role-behavior. The notion of ''identity negotiation'' may arise from the learning of social roles through personal experience. Identity negotiation is a process in which a person negotiates with society at large regarding the meaning of his or her identity. Psychologists most commonly use the term "identity" to describe ''personal identity'', or the idiosyncratic things that make a person unique. Meanwhile, sociologists often use the term to describe ''social identity'', or the collection of group memberships that define the individual. However, these uses are not proprietary, and each discipline may use either concept and each discipline may combine both concepts when considering a person's identity. The description or representation of individual and group identity is a central task for psychologists, sociologists and anthropologists and those of other disciplines where "identity" needs to be mapped and defined. How should one describe the identity of another, in ways which encompass both their idiosyncratic qualities and their group memberships or identifications, both of which can shift according to circumstance? Following on from the work of Kelly, Erikson, Tajfel and others Weinreich's Identity Structure Analysis (ISA), is "a structural representation of the individual's existential experience, in which the relationships between self and other agents are organised in relatively stable structures over time … with the emphasis on the socio-cultural milieu in which self relates to other agents and institutions" (Weinreich and Saunderson, (eds) 2003, p1). Using constructs drawn from the salient discourses of the individual, the group and cultural norms, the practical operationalisation of ISA provides a methodology that maps how these are used by the individual, applied across time and milieus by the "situated self" to appraise self and other agents and institutions (for example, resulting in the individual's evaluation of self and significant others and institutions). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Identity (social science)」の詳細全文を読む スポンサード リンク
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