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Affinity group

Social grouping formed around a shared interest or goal

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Through Hierarchy, Friendship and Ideology

Some affinity groups are organized in a non-hierarchical manner, often using consensus decision making, and are frequently made up of trusted friends. They provide a method of organization that is flexible and decentralized. Other affinity groups may have a hierarchy to provide management of the group's long-term interests, or if the group is large enough to require the delegation of responsibilities to other members or staff.

Affinity groups can be based on a common social identity or ideology (e.g., anarchism, conservatism), a shared concern for a given issue (e.g., anti-nuclear, anti-abortion), a common activity, role, interest or skill (e.g., legal support, medical aid, software engineering), or shared personal identity (e.g. race/ethnicity, gender, disability, cultural interests). Affinity groups may have either open or closed membership, although the latter is far more common. Some charge membership dues or expect members to share the cost of the group's expenses.

Employee and professional affinity groups

Affinity groups in the workplace or as part of a professional association are composed of people who share similar backgrounds or interests. In the workplace, they are also referred to as Employee Resource Groups (ERGs) that form a part of the organization diversity, equity, and inclusion efforts. Employee affinity groups are historically race- and gender-based but now also include groups that recognize affinity in age, veteran status or sexual identity. As part of a professional association, affinity group members engage in networking, mentoring, and opportunities for both professional and personal development.

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