In the 1950's, Hall and Lindzey (1957) introduced a textbook that revolutionized the field of personality psychology. Their book took a theory-by-theory approach to the field. They argued that the field could be portrayed through an impartial review of the field's theories – Freud's, Jung's, Maslow's, and so on – and the research to which they gave rise. Hall and Lindzey organized the discipline beautifully, but left it divided theory-by-theory, with little apparent means of bridging their differences.
Their framework used an outline approximately like this: