Margaret Thaler Singer (July 29, 1921 – November 23, 2003) was an American clinical psychologist and researcher with her colleague Lyman Wynne on family communication. She was a prominent figure in the study of undue influence in social and religious contexts, and a proponent of the brainwashing theory of new religious movements. Singer's main areas of research included schizophrenia, family therapy, brainwashing and coercive persuasion. In the 1960s, she began to study the nature of social and religious group influence and mind control, and sat as a board member of the American Family Foundation and as an advisory board member of the Cult Awareness Network. She was the co-author of the book Cults in Our Midst. Source: Wikipedia (en)