 Role theory has had a place in Wolfensberger's works since at least 1969 with the publication of his “Origin and Nature of our Institutional Models" (later published as a separate book), where he describes how the architecture, activities, amenities, and other characteristics of the large congregate care facilities of the era (ca.1970) contributed to casting residents into six negative ascribed roles – i.e., a social identity that is attributed to an individual because of group membership or other factors over which the person has little control (race, religion, gender, citizenship, type of disability, age, etc.