The measurement of intelligence : an explanation of and a complete guide for the use of the Stanford revision and extension of the Binet-Simon intelligence scale . take to ignore the data obtainable from othersources. No competent psychologist, however ardent asupporter of the Binet method he might be, would recom-mend such a policy. Those who accept the method as all-sufficient are as much in error as those who consider it asno more important than any one of a dozen other ap-proaches. Standardized tests have already become andwill remain by far the most reliable single method for grad-ing int


The measurement of intelligence : an explanation of and a complete guide for the use of the Stanford revision and extension of the Binet-Simon intelligence scale . take to ignore the data obtainable from othersources. No competent psychologist, however ardent asupporter of the Binet method he might be, would recom-mend such a policy. Those who accept the method as all-sufficient are as much in error as those who consider it asno more important than any one of a dozen other ap-proaches. Standardized tests have already become andwill remain by far the most reliable single method for grad-ing intelligence, but the results they furnish will always needto be interpreted in the light of supplementary informationregarding the subjects personal history, including medicalrecord, accidents, play habits, industrial efficiency, socialand moral traits, school success, home environment, question, however, the improved Binet tests willcontribute more than all other data combined to the end ofenabling us to forecast a childs possibilities of future im-provement, and this is the information which will aidmost in the proper direction of his CHAPTER IV NATURE OF THE STANFORD REVISION AND EXTENSION Although the Binet scale quickly demonstrated its valueas an instrument for the classification of mentally-retardedand otherwise exceptional children, it had, nevertheless,several imperfections which greatly limited its was a dearth of tests at the higher mental levels,the procedure was so inadequately defined that needlessdisagreement came about in the interpretation of data,and so many of the tests were misplaced as to make theresults of an examination more or less misleading, particu-larly in the case of very young subjects and those near theadult level. It was for the purpose of correcting these andcertain other faults that the Stanford investigation Sources of data. Our revision is the result of severalyears of work, and involved the


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