Robert B. Edgerton is an anthropologist with interests in psychological and medical anthropology. His early work was focused on individual adaptation to differing ecological conditions on the one hand and mental retardation on the other. His interests in mental retardation led to books such as The Cloak of Competence, which will be analyzed in this paper and Lives in Process. His ecological interests produced The Individual in Cultural Adaptation, followed by Rules, Exceptions and Social Order. He then turned his attention to studies of deviant behavior (Alone Together) and mental illness (Changing Perspectives in Mental Illness with S. Plog).
In recent years, he has developed an interest in how people cope with the stresses of warfare, a focus that has led to several books (Like Lions They Fought, Mau Mau, The End of the Asante Empire, Warriors of the Rising Sun, Death or Glory, and Warrior Women and Hidden Heroism). This interest continues, as does his concern with the impact of cultural relativism on cultural theory, best seen in Sick Societies: Challenging the Myth of Primitive Harmony, published in 1992. Throughout his career, he has maintained an interest in the community adaptation of persons with mild mental retardation. Over the past 40 years Edgerton has also been a teacher and mentor in the Neuropsychiatric Institute at UCLA where he has received a lot of support for his research.
Robert Edgerton began studying mental disability in the late 1960s. Edgerton was interested to discover how deinstitutionalized intellectually disabled adults adapted to life in the community and how they coped with the stigma of being labeled mentally retarded. He argued that they utilized a 'cloak of competence' to hide both the stigma of their discredited past and their inherent incompetence.
Rather than taking the issue of intellectually disabled peoples' incompetence as unproblematic and given, Edgerton in his book has, in a different way,