[Method of determining the concentrating ability of unschoolable children and adolescents capable of making progress]

The design, characteristics, and use of a process of determining the concentration power of unschoolable, but furtherable children and juveniles are reported. Diagnostically relevant quality criteria were determined and verified by tests of eighty-five children and juveniles. Standard values were not found. The experience gathered thus far shows that the method presented by the author in his present paper enables the capacity and development of imbecile and abnormality feeble children and juveniles to be diagnosed.