Political psychology consolidated as a discipline only in the late 1970s.

Evidence

Centers of research and training excellence were established at the University of Chicago, Columbia University, Yale University, and the University of Michigan. By the 1970’s a critical mass of political psychologists finally existed. The International Society of Political Psychology (ISPP) was founded in 1977; its first annual convention was held in 1978; and its flagship journal, Political Psychology, was launched in 1979. — John T. Jost and Jim Sidanius, Political Psychology, 102