INDEX OF SUBJECTS

General intelligence, J*Y Intelligence
General factor for persons, 171, 194,

340, 420
General-factor methods, 29£5~3I9>

365, 450-77^484-6
General factors, definition of, 102
Genetic factors, .w Factors
Genotypes, 9, n^ 377, 385
Ciestnlt, 67, 77, iSo, 224, 232, 238,

251
Group-factor methods, 156, 295-319,

365, 477-83

Group-factors, definition of, 102
Groups, theory of, 93, 242

Halo effect, i<)6, 421
Hereditary differences we Inheri-
tance
Hierarchical criterion, 54, 159, 337-

f,4

theorem of added, 164, 265, 323,

326, 491

Hierarchy, 24, 27, 97, 150-4, 337-64
definition of, 149 ; ,r/r also Matrix,

rank of

of specific intelligences, 4, 144
unit, Sff Unit hierarchy
Highest common factor,, 107-8
Homogeneity» criterion of, 50, 147

Independence, 53, 83,147, 257, 261;

see alw Factors, orthogonal
criterion of, 50^ 147
I ndividual factors, set Specific factors
Induction, 21-44, 46, 221-4
Inheritance, 8, 47, 57, 141, 23°i4°8»

441

Menddian, 8, 246, 408, 440
Instincts, 96, 134, 243, 388
Intelligence, 10, 21-3, 57, 74, 96,

195,2x3^217,314

Intensive magnitude, set Measure-
ment

Interaction, 278-9
Intercolumnar criterion, 149, 3°°*

335* 34*» 34^
Introversion, 76, 407, 410-17, 428,

434» 443

507

Inverted-factor theory, see Q-

technique
Item-analysis, 58

Key qualities, 63, 75-6, 96

Latent roots, 92, 153, 166, 263, 320,

487
Latent vectors, 92, 153, 166, 263,

320, 487
Least-noticeable differences, 130,134,

282
Least squares, method of, 26, 148,

l64> 263> 327» 385 J see also

Summation method, weighted
Linear relations, 119, 241, 258

Matrix algebra, 79, 82, 143, 238-9,

258-65, 487-94
compartite, 301
doubly centred, 292, 382, 457
factorial, 73, 261, 330, 486
modal, 486; see also Latent

vectors

multiplication of, 260, 488
population, 73, 262, 330, 486
rank of, 107,146, 263, 454, 459
rank one, 149 ; see also Hierarchy
root of, see Latent roots
Measurement, 115-138
distensive, 125,133
extensive, 118, 124
intensive, 118

postulates of, 115-19, 130-1
units of, 6, 129,134,173, 281
Memory, 6,16, 55, 59
Mental deficiency, 55, 95, 217
Mental energy, see Energy
Multiple-factor theorem, 164
Multiple-factor theory, 161-6, 184,

459-486
Multiplicative theorem, 47

Natural kinds, 35, 60, 69,105, 224
Neurodynamics, 91, 217

Operations, 127, 256