A ritual space or phase of transition in which a person is no longer what they were, but is not yet what they will be. The liminal is the in-between, the neither one thing nor the other. The term was coined by anthropologist Arnold van Gennep in his classic work The Rites of Passage (1908), which describes the variety of rituals performed by so-called primitive tribes which facilitate the passage of children to adulthood. Victor Turner develops this concept further in his work The Ritual Process: Structure and Anti-Structure (1969). Radical theatre theorist and director Richard Schechner explored the possibilities of this concept with the Performance Group in New York.