Identity formation is the process of the development of the distinct personality of an individual regarded as a persisting entity (known as personal continuity) in a particular stage of life in which individual characteristics are possessed by which a person is recognized or known (such as the establishment of a reputation). This process defines an individual to others and themselves. Pieces of the entity's actual identity include a sense of continuity, a sense of uniqueness from others, and a sense of affiliation. Identity formation leads to a number issues of personal identity and an identity where the individual has some sort of comprehension of him or herself as a discrete, separate entity. This may be through individuation whereby the undifferentiated individual tends to become unique, or undergoes stages through which differentiated facets of a person's life tend toward becoming a more indivisible whole.

Theory of developmental stages
Self-concept or self-identity is the sum total of a being's knowledge and understanding of his or her self. The self-concept is different from self-consciousness, which is an awareness of one's self. Components of the self-concept include physical, psychological, and social attributes, which can be influenced by the individual's attitudes, habits, beliefs and ideas. These components and attributes can not be condensed to the general concepts of self-image and the self-esteem.
Cultural identity is the (feeling of) identity of a group or culture, or of an individual as far as she/he is influenced by her/his belonging to a group or culture. Cultural identity is similar to and has overlaps with, but is not synonymous with, identity politics. There are modern questions of culture that are transferred into questions of identity. An ethnic identity is the identification with a certain ethnicity, usually on the basis of a presumed common genealogy or ancestry. Recognition by others as a distinct ethnic group is often a contributing factor to developing this bond of identification. Ethnic groups are also often united by common cultural, behavioral, linguistic, ritualistic, or religious traits. Processes that result in the emergence of such identification are summarized as ethnogenesis. Various cultural studies and social theory investigate the question of cultural and ethnic identities. Cultural identity remarks upon: place, gender, race, history, nationality, sexual orientation, religious beliefs and ethnicity. National identity is an ethical and philosophical concept whereby all humans are divided into groups called nations. Members of a "nation" share a common identity, and usually a common origin, in the sense of ancestry, parentage or descent.
A religious identity is the set of beliefs and practices generally held by an individual, involving adherence to codified beliefs and rituals and study of ancestral or cultural traditions, writings, history, and mythology, as well as faith and mystic experience. The term "religious identity" refers to the personal practices related to communal faith and to rituals and communication stemming from such conviction.
In business, a professional identity is the "persona" of a professional which is designed to accord with and facilitate the attainment of business objectives. A professional identity comes into being when there is a philosophy which is manifest in a distinct corporate culture - the corporate personality. A business professional is a person in a profession with certain types of skills that sometimes requiring formal training or education. The career development of an individual focuses on how individuals manage their careers within and between organizations and how organizations structure the career progress of their members, can be tied into succession planning within some organizations.
In sociology, gender identity describes the gender with which a person identifies (i.e, whether one perceives oneself to be a man, a woman, or describes oneself in some less conventional way), but can also be used to refer to the gender that other people attribute to the individual on the basis of what they know from gender role indications (social behavior, clothing, hair style, etc.). Gender identity may be affected by a variety of social structures, including the person's ethnic group, employment status, religion or irreligion, and family.

Interpersonal identity development

Main article: Hegelian dialectic Self, other, and interaction
Individuals gain a social identity and group identity by their affiliation. This is from membership in various groups. These groups include, among various categories,:
The term collective identity is a sense of belonging to a group (the collective) that is so strong that a person who identifies with the group will dedicate his or her life to the group over individual identity: he or she will defend the views of the group and assume risks for the group, sometimes as great as loss of life. The cohesiveness of the collective goes beyond community, as the collective suffers the pain of grief from the loss of a member.

family
ethnic
occupation
friendship
dating
sex roles See also