30, 37-39, 41, 55-59, 66, 260-261, 299, 410-412, 534-535

Correlation method, 14-16, 283-285

Cortex, 50, 52, 56-63, 293, 414, 423

Counter-suggestion, 549

Cramming, 342, 346

Criteria of instinct, 92, 97, 138

Criticism, 499-500, 503, 505, 508-512, 547

Crying, 144

Curiosity, 154-157, 181, 244, 258

Curve,
of distribution, 280;
of forgetting, 350, 390;
of learning or practice, 307, 316, 321, 325, 390

Cutaneous senses, 197-201, 224, 440, 451

Dallenbach, 362

Daring, 489, 518-519

Darwin, 127, 136

Davenport, 104

Day dreams, 493-499

Decision, 528-535

Defense mechanisms, 533, 535

Defensive reactions, 24-26, 142-144, 159-160, 162-164, 310

Delayed reaction, 76-77, 429

Delusion, 509

Dendrites, 31-32, 34-35, 51, 61, 190, 414

Detachment of response from stimulus, 299, 302, 310, 328

Determining tendency, 72, 380-385

Dewey, 480

Differential psychology, 3, 12, 180, 210, 271, 272, 274, 279-280,
286, 291-292, 368-370, 374, 548

Digestion, 121-123, 125

Discord, 232

Discovery, 421, 462

Discrimination, 435-437

Disgust, 127, 312

Dissociation, 559-561

Distraction, 259-260, 356-356

Distribution of intelligence, 274-275, 279-281

Dizziness, 238

Domination, 165

Dot figure, 252

Doubt, 472-473

Drainage, 269

Dreams, 499-508

Ear, 191-192, 195-196, 236-238

Ebbinghaus, 350, 365

Economy of effort, 151;
in memorizing, 338-346, 353

Effect, law of, 391-393, 413

Effort, 127, 162, 259-260, 534, 539

Egocentric response, 380

Elementary,
feelings, 173, 184-185;
sensations, 197-198, 201, 203, 211-212, 216-220, 233-234

Elimination in learning, 306, 308-309, 310, 314, 327

Emotion, 118-136, 137-169, 173, 299-301, 345, 355, 361, 381, 513-514,
554, 661

Empathy, 491, 516-516

Emulation, 165-166

End-brush of an axon, 33-36, 38, 61

Endocrine glands, 122-123, 554

Energy,
conservation of, 40;
dammed-up, 82-84, 301, 309, 393;
released, 535-546;
stored, 40-41, 46

Envy, 166, 168

Equilibrium, 65

Errors, 446-459, 467

Escape tendency, 142-144, 489, 498-499

Esthetics, 443-444, 457-458

Euphoria, 120, 151

Excitement, 126

Exercise,
effect of, 297-298;
law of, 389-391, 393-394, 413-415

Experiment in psychology, 12-15, 93, 302, 333

Explanation, 471-472

Exploration, 154-157, 244, 249-252, 258, 288, 305, 421, 462-465, 470

Expressive movements, 126-128

Eye, 32, 34-35, 62, 191, 198-196