INDEX OF SUBJECTS Absolute impression, 125, 285. Abstract idea, 263 ff. Abstraction, nature of, 280; experiments on, 249 f., 280 ff.; laws of, 280 f., 349. Accommodation, sensations of, 128. Ache, 64. Action, distinguished from movement, 231; psychological problem of, 231 f., 258; typical, 233 ff.; impulsive, 234 f., 244 f.; studied in the reaction experiment, 236 ff.; varies with shift of emphasis in instruction, 242, 252; sensorimotor and ideomotor, 243, 251; artificial and physiological reflex, 243 f., 251; primitive, 244 f., 258; selective, 246 ff.; by ‘trial and error,’ 247 f.; volitional, 249 ff.; alleged determination of, by pleasure and pain, 257 f. Activity, ascribed by common sense to mind, 6 f., 91 f., 146, 258. Adaptation, visual, 61; olfactory, 51, 63. Æsthetic sentiments, 299 f., 301 f. After-image, visual negative, 62, 74; positive, 74, 133; of memory, 74. Amnesia, hypnotic, 342 f. Anæsthesia, kinæsthetic, 46; in hypnosis, 342 f. Analysis, psychological, 15 f., 112; tested by synthesis and repeated analysis, 16 f.; of perception and idea, 114 ff., 125, 125 f.; of recognition, 177 ff.; of emotion, 215 f.; of a typical action, 234 f.; of expectation, 272 ff.; of intellectual attitudes, 274 f. Animals, psychology of, 12 ff., 32, 51, 134, 219 f., 247, 267. Antagonism, retinal, 59 f., 61, 63. Antithesis, Darwin’s principle of, 223. Apprehension, direct, 181 f.; disturbance of, 182 f. Association, the doctrine of, derives from Aristotle, 145 ff.; ‘laws’ of, 146 f., 168, 175; agreeable to common sense, 146 ff., 203; has done psychological service, 148; works with meanings, 149, 162, 163 f., 168; regards course of ideas too intellectually, 161 f., 258; successive, 161 f.; regards action too emotionally, 258.