Most mainstream psychologists consider philosophy irrelevant to their work, but see themselves as realists. Various opposition movements embrace philosophy but reject realism, either completely or partially, despite upholding ideas consistent with a realist philosophy. Many on both sides see the Tower of Babel that constitutes psychology as a sign of healthy diversity, not fragmentation. We argue that relations among the three factors – philosophy, realism and fragmentation – deserve closer scrutiny. With philosophy’s core method of conceptual analysis deprioritized, both mainstream (...) psychology and the opposition fracture into an array of “partial realisms”, falling away from a realism that is thoroughly consistent. These are the source of psychology’s fragmentation. The conceptual neglect and resulting confusions can be seen in psychology’s recent replicability crisis, and in the widespread adoption of a representationalist approach to the mind/brain. We argue that the metatheoretical coherence and methodological maturity required for genuine scientific progress involves a consistent adherence to realism. We spell out what that involves and consider several reasons why this has been so difficult for psychology. (shrink)

Scientific psychology involves both identifying and classifying phenomena of interest (description) and revealing the causes and mechanisms that contribute towards these phenomena arising (explanation). Within personality psychology, some propose that aspects of behavior and cognition can be explained with reference to personality traits. However, certain conceptual and logical issues cast doubt upon the adequacy of traits as coherent explanatory constructs. This paper discusses ?explanation? in psychology and the problems of circularity and reification. An analysis of relations and intrinsic properties is (...) then developed to address the logical requirements necessary for circumventing these problems. An examination of McCrae and Costa's defense of traits as explanatory constructs, in terms of ?tendencies? and ?dispositions? highlights logical issues that prevent traits, so defined, from explaining trait-like behaviors and cognitions. The logical requirements for a coherent trait-explanatory account are outlined and possible explanatory directions in trait-approaches are discussed. The ongoing tendency towards fallacious reasoning in psychology and suggestions for preventing this are further examined. (shrink)