113│ 15│ 2│XIII │XIII │ 9 B│Trespass 114│ 12│ 10│XII.2 │XII │ 5 B│Incorrigibility 115│ 14│ 7│XI.6 │XI[35] │ 7 B│Incorrigibility [36]116│ 15│ 10│XI.4 │XI │ 7 A│Incorrigibility [36]117│ 13│ 9│XII │XII │ 4 A│Incorrigibility [36]118│ 9│ 1│XI.2 │XI[35] │ 5 B│Incorrigibility [36]119│ 16│ 11│XI │X[35] │ 7 B│Disorderly conduct [36]120│ 13│ 3│XII.2 │XII │ 6 B│Truancy [36]121│ 9│ 9│IX.6 │VIII[35]│ 4 B│Sweeping grain car [36]122│ 11│ 9│X.8 │X │ 3 B│Sweeping grain car [36]123│ 10│ 3│X.2 │X │ 4 A│Truancy ───────┴────┴────┴────────┴────────┴────────┴────────────────────────── ----- Footnote 35: Passed all tests at the basal age. The others passed all but one test at the basal age. Footnote 36: Repeater. INDEX Ability of the feeble-minded, 74, 92, 197 Arrest of development, see maturity Average curves, 280 ff Binet Scale, 7, 172 Year units of, 260 ff Borderline of deficiency, 5, 13, 304 ff For the mature, 82-95, 240, 315 For the immature, 104-110 Causes of delinquency, 203 ff, 210 ff Method of studying, 218, 224 ff, 231 ff, 244 City jails, 148 Coefficient of intelligence, 305, 313 Conative cases, 15, 18, 24-30, 34-40, 239, 248 Convicts deficient, 142 Correlation: of degree of deficiency with delinquency, 217 Of deficiency and criminality, 220 Significance of coefficients of, 219 Of deficiency and juvenile delinquency, 220 County institutions, 134, 148 Crimes by the feeble-minded, 212, 214 Criminal diathesis, 234 Death rates, 30 Deficiency, nature of, 21, 211 ff, 239 See feeble, frequency, correlation, etc. Deficient delinquents, 158, 190, 199, 211 ff, 239, 246 Delinquency, see frequency of, causes of, correlation, etc. Delinquents: first offenders, 165, 167 Repeaters, 168 Delinquents, tested: female, 128-141 Male, 141-157 Development curves, 252 ff., 279 ff Diagnosis, 6, 11, 14, 52, 90, 107, 172-176, 194, 197, 201, 241-244 Distribution curves, 267-275, 317-323 Doubtful cases, 18 Employment of feeble-minded, 74-80 Environment, 42, 225 ff Estimating deficiency by schooling, 190, 199 Expert court advice, 243 Family resemblance versus heredity, 231 Feeble-minded not detected by tests, 14, 34-40 Feeble-mindedness, 10, 17, 18, 20, 239 See deficiency. Frequency of deficiency, 23, 47 ff., 80, 158 ff Effect of local conditions, 147, 152, 161, 163 Frequency of delinquency among deficients, 211-218 General ability, 34, 45, 282 ff Glen Lake Farm School, 122, 177 Goddard's Scale, borderlines, 89, 106, 111, 313 Goring's study of criminals, 218 ff., 231 ff Gruhle's method, 229 Heredity, 229 ff., 236, 244 Individual differences, 41, 280 Inert cases, 15 Instability, 15, 23 Institutional care, 242, 246, 248