The author of this brief paper is apparently disturbed over what he feels is the lack of operational logic in psychosomatic medicine. Operational logic is that outgrowth of modern physics which emphasizes the relativeness of measurement and accordingly requires definitions of phenomena in terms of the processes used to observe or measure them. The lack of operational logic is more apt to be present in material gathered by a clinically oriented method with which, for example, one may measure the physiological factors but not the associated anxieties. This inability to quantify such variables as anxiety leads to difficulties in definition, and by further implication, into the analysis of causal factors. Because of such language difficulties workers in the field of psychosomatic medicine are accused of not effectively resolving problems of mind-body relations. With greater emphasis on experimental procedures in psychosomatic medicine, criticisms similar to those advanced in this paper will disappear.