Ideas, development of, 121 f., 289 ff.; existence of, as adjuncts in animal learning, 108 ff., 189 ff., 206 ff., 222 ff.; impotence of, to create connections, 257 ff.
Ideo-motor action, 257 ff.
Images, 108 f. _See also_ Ideas.
Imitation, analysis of the supposed effects of, 251 ff.; in cats, 85 ff.; in chicks, 81 ff.; in dogs, 91 ff.; in general, 76 ff., 94 ff.; in monkeys, 96, 211 ff., 219 ff.; in speech, 253 ff.
Impulses, as features of the associative processes, 100 ff.; defined, 37.
Incubation, the instinct of, 276 ff.
Individual differences in association, 52 ff.
Inhibition of instincts by association, 142 ff.
Instincts, as explanations of some cases of supposed imitation, 251; inhibition of, 142 ff.; of chicks, 156 ff.; of incubation, 276 ff.; of monkeys, 237; the starting-point of animal learning, 36 f.
Intellect. _See_ Association, Ideas, Imitation, Memory, Reasoning, etc.
Interaction, 147 f.
Introspection, the over-emphasis of, 3.
