a selection CHAPTER II - THE UNCONSCIOUS The concept of "the unconscious" in psychology is one which has aroused the liveliest differences of opinion and has been met by bitter opposition. Even those who are ready to accept the vast influence of unconscious factors in psychology may well be appalled by the difficulties of treating the unconscious in a scientific manner and fitting so necessarily hypothetical a factor into the explanation of behaviour. One line of opposition has come from advocates of the older introspective school of psychologists who have found it difficult to fit an unconscious region of the mind into their schemes of description and explanation. The aim of the older psychology was to furnish a rational explanation of human behaviour and endeavour. As the material for such explanation they used almost exclusively the happenings in their own minds, which could be directly, though really only retrospectively, observed, and made this material the basis of constructions whereby they fitted into coherent schemes the infinitely varied experience of the human mind. When their introspective method failed them, and they were driven to assume the existence of factors lying outside those accessible to introspection, they were accustomed to assume subconscious processes, or to speak of psychological dispositions and tendencies, or they would even throw psychology wholly aside, bringing into their schemes of explanation factors belonging to the wholly different order of the material world, and used physiological processes as links in the chain whereby they connected one psychological happening with another. Those who adopted subconscious processes as elements of their constructions, viz., processes which only differed from other mental processes in the lesser degree of distinctness and clearness with which they could be observed, paid in this way lip-service to the supposed essential character of consciousness in psychology, but failed to recognise that they were only evading a difficulty by clinging to a simulacrum of the conscious, the existence of which was just as hypothetical as any of the constructions of the thoroughgoing advocates of the unconscious. Those who spoke of psychological dispositions, or going still further, adopted physiological dispositions in their place, were also positing purely hypothetical factors where those open to direct observation failed them. These measures were only means by which these psychologists and psycho-physiologists escaped from the necessity of facing the difficulties presented by many aspects of animal and human behaviour, and especially those presented in Man by the phenomena of disease. It is noteworthy that the due recognition of the importance of the unconscious and the first comprehensive attempt to formulate a scheme of its organisation and of the mechanisms by which it is brought into relation with the conscious should have come from those whose business it is to deal with the morbid aspect of the human mind. The necessity for the use of unconscious factors continually arises when dealing with the experience of health, but the opportunities afforded by such experience are usually so fleeting, and the experience itself often so apparently trivial, that they failed to force the psychologist of the normal to face the situation. It was only when unconscious experience had contributed to wreck a life or produce a state with which the physician had to struggle, and then often ineffectually, for months or years that it became impossible to push such experience aside or take any other line than that involved in the full recognition of its existence. It is only the urgent and inevitable needs of the sick that have driven the physician into the full recognition of the unconscious, while it has needed the vast scale on which nervous and mental disorders have been produced...
William Halse Rivers Rivers, FRCP, FRS was an English anthropologist, neurologist, ethnologist and psychiatrist, best known for his work treating World War I officers who were suffering from shell shock. Rivers's most famous patient was the poet Siegfried Sassoon, with whom he remained close friends until his own sudden death. Rivers was a fellow of St John's College, Cambridge, and is also notable for his participation in the Torres Straits expedition of 1898 and his consequent seminal work on the subject of kinship.