what is a group
A group is: 1  two or more people who share a common definition and evaluation of themselves and behave in accordance with such a definition. ( 2 Vaughan & Hogg, 2002, p. 200).3  a collection of people who interact with one another, accept rights and obligations as members and who share a common identity.riteria for a group include: 1  formal social structure. 2  face-to-face interaction. 3  2 or more persons.