Abstract

As a pilot study for the development of Korean version of WPPSI-R, 301 preschool and primary school children were tested with a revised WPPSI-R in three locations (Seoul, Chung -joo, and Ulsan). The pilot version of the test was prepared based on the translation of the original material(manual and the fast items) as well as the addition of new items for subtests of Information, Comprehension, Vocabulary, and Similarities. Interscorer reliability coefficients measured by two independent scoters with 30 children's data were satisfactory:.94 on Comprehension, .97 on Vocabulary, .88 on Similarities, .80 on Mazes and .94 on Geometric Design. Spearman-Brown split-half reliability coefficients for 11 subtests were found very similar to those for the original WPPSI-R. The reliability estimate for 'Animal Pegs' was not obtained since the split half technique is inappropriate for estimating the reliability of speeded tests. All coefficiants were above .80 except the Object Assembly(.56). Another index of the consistency of scores, the standard error of measurement was also obtained. Factor analyses revealed three significant factors, the performance factor, the verbal factor as well as the 'animal pegs' factor which explained over 60% of total variance in all age groups. Girls performed slightly higher than the boys in all subtests especially in Geometric Design and Animal Pegs. This study developed test material and the standardization study for the IQ norms and other validity studies will be followed.