Tests of the Stanford Revision of the Binet-Simon Scale Most Frequently Failed by Children in Orthogenic Backward Classes

Supervisor of Mental Examinations, Department of Special Education, Philadelphia The object of this experiment was first, to determine the tests most frequently failed by children in the Orthogenic Backward classes and secondly to see how these failures correlated with the ability or inability to do school work. One hundred cases of ten year old children (10-0 to 10-11) were selected for the study. This age group was decided upon because it approximates the average age of Fifth Grade children, and also because it is the median age level between the Six and Fourteen Year Levels. Also the range for success and failure is equally distributed above and below the Ten Year Level. The cases were selected on the basis of the recommendations made by the different examiners, that is, all the cases used were recommended for placement in an Orothgenic Backward class. None of them was considered an institutional case and all are attending the public schools. The Intelligence Quotients ranged from 60 to 89. Only the starred Binet questions were used since the complete Binet is seldom given in the public schools. The following table shows the number of failures for each test.