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KMID : 0378019900330010027
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New Medical Journal
1990 Volume.33 No. 1 p.27 ~ p.34
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Intelligence Testing of Children with Cerebral Palsy using the "Korean-Wechsler Intelligence Scale for Children(K-WISC)" and the "Draw a Man Test"
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Abstract
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This study was performed under the hypothesis that cerebral palsied children with impaired hand function will be unable to demonstrate their true ability in the conventional K-WISC especially in the performance test where the allotted testing time is limited.
The purpose of the study was to ascertain whether the conventional K-WISC is appropriate as an intelligence test for children with this specific disability, and to examine the adequateness of a modified method of intelligence testing which prolongs the test duration. Furthermore, we have investigated the correlation between the "K-WISC" an "Draw a Man Test" test result. The subjects of the study were 30 cerebral palsied children (5-16 years old) who were seen in the Rehabilitation Psychology Section, Department of Rehabilitation Medicine, and Severance Hospital during the period August, 1986 to May, 1987. The subjects were divined into three groups according to the degree of hand function. Impairment, namely mild, moderate and severe.The K-WISC was given during a total period twice the conventional time with checks made at the-end of the conventional test time limit and 1.5 times the conventional time limit. The "Draw a Man Test" was carried out simultaneously and analysed statistically.
The results were as follows
1. The performance level in the "coding" subtest of the performance test was significantly different according to the degree of impairment of hand function.
2. There was no interaction between the level of hand function and the mean IQ obtained by each group with the prolongation of the K-WISC test duration.
3. A high correlation between the result of "K-WISC" and "Draw a Man Test" as a test of intelligence was observed. In summary, it was noted that prolongation of the testing time did not improve the performance of children with impaired hand function in K-WISC. However, two recommendations are proposed. First, consideration of replacing the K-WISC "Coding" subtest, which is strongly influenced by abnormal hand function, by the "Maze" subtest would seem to be helpful. Second, the "Draw a Man Test" would seem to be very useful as an intelligence test; for cerebral palsied children.
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