Psychology in Physical Language

In this paper Carnap extends the program of physicalism to psychology, by demonstrating that the statements of psychology can be translated into the physical language, and thus, that the laws of psychology can be interpreted as the laws of physics. It is claimed that every psychological sentence is related to physical processes in the body of the corresponding individual (or individuals), and hence, psychology is a subdiscipline of a unified science built on the basis of physics. Physics is understood here in a maximal broad sense, as some general science, which sets up correspondences between numbers and time-space points.