We may say, in fact, that the establishment of a specific type of emotional change is justification for classifying all milder stupor reactions with the deep stupors. In other words, our reason for the enlargement of the stupor group to include all apathetic reactions (except those of dementia præcox) is the belief that this dulling of the emotional response is as specific a type of emotional change as is anxiety, depression or elation. Perhaps it would be more accurate to say that this clinical group is founded on the symptom complex which is built around apathy. There is never any resemblance between apathy and the mood of elation or anxiety. A discrimination from depression is the only differentiation worth discussion. The first point that should be made is that there is a difference between marked depression and the mood of stupor. In the former we get a retardation with a feeling of blocking, rather than of an absence of energy. The expression of the patient is one of dejection, not of vacancy, which bespeaks a mood of sadness, even when the patient is so retarded as to be mute and therefore incapable of describing his emotions. Running through all the stages of stupor, however, there is an emptiness, an indifference that is in striking contrast to the positive pain that is felt or expressed by the depressed patient. It may be objected, of course, that this apathy really represents the final stage in the emotional blocking of the depressed individual, but the development of stupor and recovery from it shows an entirely different type of process. A deep depression recovers by changing the point of view from a feeling of unworthiness and self-blame to one of normality. The stuporous case, on the other hand, evidences merely less and less indifference, and more and more interest in his environment and in himself as he gets well.