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윤치연(Chi-Yeon Yoon),신명선(Myung-Sun Sin) 한국언어치료학회 2005 言語治療硏究 Vol.14 No.2
This study was preliminarily executed to develop the Korean Scale assessing the level of language development for young children. Items were made up two domains of language development: receptive and expressive. Subjects were 136 young children(male 70, female 66) who have been committed to a day care center.For demonstrating the reliabilities of the scale, the internal consistency of the items was investigated to Cronbach's α and the Standard Error of Measurement(SEM). The reliability coefficients for the subtests were reached above .97 by age group. The SEM for the subtests of this inventory is approximately less than the score point 5. Also the test-retest correlation coefficients were reached above .94 in parent raters and above .91 in teacher raters and were all statistically significant(p<.001).Also a confirmatory item analysis was done for determining the validities. The median coefficients for each subtest were .785 in receptive and .795 in expressive, and were all statistically significant(p<.01). Also, the intercorrelation among its subtest was statistically significant(p<.001).