CHAPTER XVI.

ASSOCIATION 253

The order of our ideas, 253. It is determined by cerebral laws, 255. The ultimate cause of association is habit, 256. The elementary law in association, 257. Indeterminateness of its results, 258. Total recall, 259. Partial recall, and the law of interest, 261. Frequency, recency, vividness, and emotional congruity tend to determine the object recalled, 264. Focalized recall, or 'association by similarity,' 267. Voluntary trains of thought, 271. The solution of problems, 273. Similarity no elementary law; summary and conclusion, 277.