CHAPTER XI

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ATTENTION

Its neglect by English psychologists. Description of it. To how many things can we attend at once? Wundt's experiments on displacement of date of impressions simultaneously attended to. Personal equation. The varieties of attention. Passive attention. Voluntary attention. Attention's effects on sensation;--on discrimination;--on recollection;--on reaction-time. The neural process in attention: 1) Accommodation of sense-organ. 2) Preperception. Is voluntary attention a resultant or a force? The effort to attend can be conceived as a resultant. Conclusion. Acquired Inattention.

## CHAPTER XII .

CONCEPTION

The sense of sameness. Conception defined. Conceptions are unchangeable. Abstract ideas, 468. Universals. The conception 'of the same' is not the 'same state' of mind.

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