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To be active is to be efficient but we saw that it is difficult to give any definite meaning to efficiency and that those who attempt to give such meaning are generally led to mental activity as that in which the meaning can be most definitely seen. Now when the mind is active we certainly do find something that may be called efficiency but we have to try to discover exactly what it is. In order to see this it will be well to return to the subject of attention in which recent psychologists have sought to discover what is most definitely characteristic of mental activity. Wc have noticed that attention means primarily intensity of consciousness which may mean either degree of clearness or degree of distinctness or both. Now degree of clearness seems to depend on general wakefulness and this as we shall note more fully later seems to depend largely on organic conditions. prev next |