Mutual aid groups; Mutual help groups; Peer-led group; Self-help support group; Self-help/mutual aid Definition While their names such as self-help/mutual aid group, self-help group, or mutual help group, and definitions are contested, researchers studying them tend to agree on three central characteristics: (1) they "are run for and by people (nearly always volunteers) who share the same health, economic, or social problem or issue; (2) the primary source of participants' knowledge about their issue is direct experience; and (3) these groups operate predominantly in the nonprofit sector (Munn-Giddings et al. 2016, p. 394)." The groups usually intentionally and voluntarily convene around a common focal issue "that is challenging and/or stigmatizing for them all (thus, peers) in order to ameliorate or improve their conditions or situations. A critical feature of these groups is that they are run for and by the people who share the situation, which distinguishes them from groups run by trained professionals (e.g., social workers), which tend to be referred to as 'support groups' in the academic literature" (Munn-Giddings and Borkman 2018, pp. 59-60). Self-help/mutual aid conveys the dual features: self-help connotes relying on one's resources and lived experience, while mutual aid refers to the distinctive form of volunteeringthe reciprocal relationships of mutual helping (i.e., active participants both give and receive help). They are usually founded by citizens but can be instigated by professionals who later withdraw and pass leadership onto members of the peer group.