Abstract: Kimble's inveshgation showed that there are two cultures in westem psychology—scientism and humanism. The major reasons for the two cultures are classified as:(a)the hegemony of the scientism and its reaction against it (b) the influences ofpositivism, phenomnology, and hermeneutics, and (c) the value biases andorientations of psychological schools and organizations. The separation of the twocultures was examined from three contrasting views: (a) the natural science model vs.the humaniostic science model, (b) the method-centered vs. Th subject-centered, and (c)the value-free vs. The value-loaded. In the author's opinion, our commitment has tobe changed from physical sciences to systematic science methodology in order tOunify the two cultures.

Key words: psychology, scientism, humanism, unification