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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated.1892 Excerpt: ... CHAPTER VI. MENTAL ELABORATION: ATTENTION. § i. Nature of Psychical Elaboration. Having briefly surveyed the primitive elements of our psychical life, we proceed to study the processes by which these are elaborated into the several later products, ideas, thoughts, complex emotional states, etc. According to our general conception of mental activity as conditioned by nervous action, we have to regard these processes of elaboration as in a manner mechanical. That is to say, as psycho-physical operations they must be supposed to involve and to depend on mechanical movements in the central nervous structures. At the same time, since the processes are conscious processes, we may be allowed to speak of them as the mind's elaboration of its material. The forms of this elaboration must be studied in the conscious processes themselves. As will appear presently, our knowledge of the nervous processes involved helps us as yet only very slightly to understand these forms. In analysing the process of psychical elaboration into its constituent processes, we shall be chiefly concerned with intellectual development, or the elaboration of ideas, thoughts, etc., out of sensations. It is here that we can most plainly see into the nature of psychical elaboration; and it may be expected that the development of feeling and of volition will proceed by closely analogous processes. § 2. Attention as a Factor in Elaboration. The place of attention in our mental life has already been roughly defined. It is a phenomenon of the active side or phase of mind, and as such will have to be studied under the head of conation. At the same time, it is present in a measure in all fully-developed or distinct conscious states, and is the great determining factor in the raising of psychi...

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