Metascientific foundations for pluralism in psychology

In this paper, I explore the metascientific basis for pluralism in psychology. In the first half, I outline the two levels of the metaparadigm: the epistemological and the methodological. The epistemological level includes the dichotomy between an internal, first-person point of view and an external, third-person one. The methodological level includes the dichotomy between explanation and understanding. The continuing debate regarding methodology, explanation versus understanding, has distinguished the human sciences from the natural sciences. Similarly, the continuing debate regarding the epistemological point of view has distinguished psychology from other sciences. I illustrate these points by placing various trends in psychology into the two-dimensional space formed by the two coordinate axes depicting the methodological and the epistemological dimensions. Each quadrant represents one definition of the object of psychology: quadrant 1 (internal, first-person - explanation) represents “consciousness;” quadrant 2 (internal, first-person - understanding) represents “experiences;” quadrant 3 (external, third-person - understanding) represents “meaningful acts and expressions;” and quadrant 4 (external, third-person - explanation) represents “behaviors and higher processes of the brain.” All of the trends within the history of psychology can be placed within this two-dimensional space. In the second half of the paper, I introduce the third level of the metaparadigm: the metapsychological level. This level includes the three different, and incompatible conceptions of humans: the first-person, the second-person, and the third-person conceptions. A third-person conception of humans is most compatible with trends placed in quadrant 4. A second-person conceptualization is most congruent with quadrant 3, and so on. Thus, the unification of psychologies emerges as not only difficult but actually unreasonable, because the plurality of psychological paradigms originates from the epistemological, methodological, and metapsychological levels of the metaparadigm.