Independence, 163-164

Individual, 91

Individual psychology, _see_ Differential psychology

Induction, 374-375

Inference, 465-468, 475-476, 479

Inferiority, sense of, 166, 168, 496, 510, 555

Inheritance of acquired traits, 113-114

Inhibition, 25, 54-55, 78, 83-84, 122-125, 248, 257, 263, 314, 382,
384, 429-430, 528, 540

Initiative, 545

Insane, 269, 508-609

Insight in learning, 316-320

Instinct, 105-116, 137-169, 179, 181, 488-489, 492, 513, 554;
criteria of, 92, 97, 138;
and emotion, 134-135;
modification of, 299-301

Integration, 558-561

Intelligence, 90-91, 271-293, 538, 555;
tests of, 3, 272-277, 281-283

Intelligence quotient, 274-275, 289-290

Intensity of sensation, 206;
of reaction, 379, 391, 433

Interest, 181-184, 248, 257-259

Interference, 355-356

Internal secretions, 122-123, 554

Intra-uterine life, 90-92

Introspection, 10-11, 19

Invalidism, 546

Invention, 421, 475, 484, 485, 509-512, 517, 619

"IQ," 274-275

Isolation, 431-432, 435-437, 455-459, 468,479

James, 117, 129, 136, 331, 365, 418, 480, 511, 551, 561, 571

James-Lange theory, 128-130

Janet, 569, 571

Jastrow, 571

Jennings, 88

Jost, 342

Judd, 461

Judgment, 550

Jung, 388, 569

Kimmins, 522

Kinesthesis, 240

Koenig, 217

Ladd, 44

Ladd-Franklin, 221-224, 243, 453

Lange, 129

Lashley, 88

Laughter, 157-168, 161

Law,
of advantage, 256;
of association, 394-398;
of attention, 256, 262-263, 267;
of combination, 263-264, 398-417;
of effect, 391-393;
of exercise, 389-391, 393-394;
of habit, 389;
of reaction, 256, 262-263, 267;
of selection, 256, 262, 378, 382;
of shifting, 256, 263;
of tendency, 81, 263

Learning, 93-94, 96, 99, 112, 113, 143-144, 296-329;
laws of, 389-417, 433

Libido, 507

Light, 212-213

Likes and dislikes, 178-184, 291, 492-493, 513

Linkage, _see_ Attachment

Lobes of the brain, 50

Local sign, 440-441

Locomotion, 93-97, 99, 152-153, 486

Logic, 475-476

Love, 535

Loyalty, 169, 531

Make-believe, 482-483, 508

Management,
of action, 541-546;
of attention, 267-268;
of memory, 338-346, 353, 356, 360-363;
of reasoning, 478-479

Manipulation, 154, 315, 481-483

Massed learning, 341-343, 345

Mastery impulse, _see_ Self-assertion

Martin, 28

Mathematics, liking for, 181-182

Mating instinct, 97, 116, 147-148

Maturing, 92, 96

Maury, 501

Maze