A review of articles published and books reviewed in the Canadian Journal of Psychology from the years 1984 - 1988, indicates that all paradigms are represented in the material. Moreover, the vast array of topics indicate that one paradigm or perspective would not be able to fully address all these topics. These findings are consistent with the authors' claim that a dialectical view of approach and method results in a more progressive, integrated form of knowledge within the realm of psychology. Eventually, this could lead to the separation of the various parts of psychology. In some respects, this argument is correct.
Psychology definitely has many different approaches or paradigms.
It is also true that there is often tension and discontent between these various paradigms. Unlike the so-called 'pure' sciences, there is no one answer to any given psychological problem or issue. Human phenomena is vastly complex and varied. Furthermore, people operate not only on a physical level, but also on biological, psychological, and sociological levels. It would be impossible for all these levels of human phenomena to be explained by one single law or principle.