Conspiracy thinking is defined as a pattern of explanatory reasoning about events and situations of personal, social, and historical significance in which a "conspiracy" is the dominant or operative actor. While conspiracy thinking exists to some extent probably in every society, the authors note the special prevalence of this type of thinking in the Arab-Iranian-Muslim Middle East, and offer a psychoanalytically based approach to conspiracy thinking based on theories of the paranoid process. The authors also attempt to identify aspects of Arab-Iranian-Muslim culture that may predispose individuals from that culture to conspiracy thinking, especially child-rearing practices, attitudes toward sexuality, and the role of secrecy.