can be several mental groupings, which can remain more or less independent of one another, which can ‘know nothing’ of one another and which can alternate with one another in their hold upon consciousness. Cases of this kind, too, occasionally appear spontaneously, and are then described as examples of ‘double conscience’.¹ If, where a splitting of the personality such as this has occurred, consciousness remains attached regularly to one of the two states, we call it the conscious mental state and the other, which is detached from it, the unconscious one.
