Nature Of The Stanford Revision And Extension





Although the Binet scale quickly demonstrated its value as an instrument

for the classification of mentally-retarded and otherwise exceptional

children, it had, nevertheless, several imperfections which greatly

limited its usefulness. There was a dearth of tests at the higher mental

levels, the procedure was so inadequately defined that needless

disagreement came about in the interpretation of data, and so many of

the tests were misplaced as to make the results of an examination more

or less misleading, particularly in the case of very young subjects and

those near the adult level. It was for the purpose of correcting

these and certain other faults that the Stanford investigation was

planned.



The writer wishes to acknowledge his very great indebtedness to

Miss Grace Lyman, Dr. George Ordahl, Dr. Louise Ellison Ordahl, Miss

Neva Galbreath, Mr. Wilford Talbert, Dr. J. Harold Williams, Mr. Herbert

E. Knollin, and Miss Irene Cuneo for their cooeperation in making the

tests on which the Stanford revision is chiefly based. Without their

loyal assistance the investigation could not have been carried through.



Grateful acknowledgment is also made to the many public school teachers

and principals for their generous and invaluable cooeperation in

furnishing subjects for the tests, and in supplying, sometimes at

considerable cost of labor, the supplementary information which was

called for regarding the pupils tested. Their contribution was made in

the interest of educational science, and without expectation of personal

benefits of any kind. Their professional spirit cannot be too highly

commended.





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