The author undertook a series of experiments in order to find a method of objective examination of the analytical situation. The problem was whether, if one could find certain physiological indicators of tension (unconscious processes) and affects (conscious processes), one could predict changes of the affective life from the data for tension and vice versâ. Examination of a patient during twenty-eight psycho-analytical interviews gave traces which show that verbal and psychical changes are connected in a characteristic way; that changes of the conscious affects are in close relationship to the pulse frequency and that changes in tension are closely related to the electrical conductivity of the skin.