A DEVELOPMENTAL STUDY OF THE INTELLIGENCE IN CHILDREN WITH BRAIN LESIONS

Abstract

The purpose of present study was to examine by the WISC to determine the relative difficulty of subtests and by the Suzuki-Binet Scale to ascertain the extent of "Chirabari," the number of first failure to last success in the intelligence test, about brain damaged, epileptic and normal children. Subjects were 118 normal (male 67, female 51) and 79 epileptic children (male 52, female 27) on the Suzuki-Binet Scale, and were 38 brain damaged and epileptic children (male 34, female 4) on the WISC. The results were as follows: (a) "Chirabari" scores on the Suzuki-Binet Scale increase with the ages for both groups, and the scores of epileptic group increase more earlier than non-epileptic group, (b) it is not probable that the epileptics easily pass the items of numerical or verbal immediate memory, vocaburaly, and performances, but the test performances in the elder epileptics tend to reach on the normal level, (c) the WISC Scaled Scores on the level of the higher I. Q. or the elder mental age do not show a charactristic scatter pattern of subtest scores for organic as a group, except the subtest of coding which is most difficult to achieve, (d) in the comparison between the Verbal Scale I. Q. and Performance Scale I. Q., it is not found that there is a significant discrepancy between both of the Scaled Scores, but the Performance S. S. tend to be scored significantly higher than Verbal S. S. on the 7 to 9 years old on the mental age or otherwise the 90 to 109 levels on the intelligent quotient, and (e) the faster improvement of intelligent defects is found on the Performance Scale in the organics as well as the epileptics.