• Korean Journal of Child Studies
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• v.36 no.1
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• pp.65-83
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• 2015

The purpose of this study was to validate the newly developed K-WPPSI-IV using other current IQ tests in common use in Korea such as the K-ABC and K-CTONI-2. Fifty three 2~7 year olds were tested with both the K-WPPSI-IV and K-ABC in a counterbalanced order. Simultaneous, cognitive, information processing as well as acquisition indices of K-ABC were moderately correlated with the total IQ of K-WPPSI-IV, ranging .44~.58. The results of these tests were comparable with US data: Correlations among WPPSI-IV & DAS-II subscales were .31~.67. The correlations among K-WPPSI-IV & K-CTONI-2 subscales in sixty two children ranged from .43~.49. WMI(Working memory index) as well as PSI(Processing speed index) of K-WPPSI showed low correlations with non-verbal IQ. These results indicated that nonverbal IQ does not test processing speed which in turn is very important in WMI & PSI Indices of K-WPPSI-IV. Further studies are needed to broaden the concurrent validities using K-WISC-IV or K-BSID-2. In addition, predictive as well as discriminate validity studies need to be conducted for better understanding of K-WPPSI-IV.

• Korean Journal of Child Studies
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• v.37 no.6
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• pp.107-117
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• 2016

Objective: This study examined the construct validity of K-WPPSI-IV. Factor structures of the structures of the K-WPPSI-IV full scale as well as primary index scales for two age ranges (2 years, 6 months to 3 years, 11 months; 4 years to 7 years, 7 months) were examined. Methods: Data were collected from 1,700 children aged 2 years, 6 months to 7 years, 7 months during the K-WPPSI-IV standardization. Confirmatory factor analyses were conducted using the K-WPPSI-IV subtest performances with maximum likelihood estimation using Amos 18. Results: First, the three-factor model (verbal comprehension, visual spatial, and working memory) fitted best for the younger age range. However, the five-factor model (verbal comprehension, visual spatial, fluid reasoning, working memory, and processing speed) fitted best for the older age range. Residuals suggest the presence of two nested subfactors within the verbal comprehension factor (broad/expressive and focused/simple). Second, the confirmatory factor analysis on primary index subtests identified factors that account for the intercorrelations among the reduced sets of primary index subtests. Conclusion: The findings showed that the theoretical structures of WPPSI-IV subtests were confirmed within K-WPPSI-IV.

• Korean Journal of Childcare and Education
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• v.12 no.4
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• pp.111-130
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• 2016

This study examined the reliability and validity evidence of the Korean version of Wechsler Primary & Preschool Scale for Intelligence(K-WPPSI-IV), which was standardized recently. Following the stratified sampling for Korean population in terms of region and maternal education level, 1,700 children aged 2.6~7.7 years were recruited for Korean norm development. The split-half reliability (N=1,700) was high(Fisher's z(.75-.89)) and test-retest reliability(N=100) was satisfactory ranging from .95 to .68. The inter-rater reliability(N=110) was very high(.96-1.0). Discriminant and convergent validities were revealed by correlational patterns among subtests and indices. Future studies are needed to extend both reliability and validity of K-WPPSI-IV by collecting data with a various sample group and a variety of instruments.

• Korean Journal of Child Studies
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• v.23 no.4
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• pp.185-197
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• 2002

The Korean Wechsler Preschool and Primary Scale of Intelligence (K-WPPSI) was administered to 27 autistic children, 3 to 7 years of age. The average IQ was 51.96. There were negative correlations of verbal and performance IQs with chronological age. These children generally performed very poorly on each subtest. Paradoxically, the verbal subtest scores of these autistic children were higher than their performance scores; thus, the typical verbal inferionity of autistic children was not evident in this study. These results suggest that autistic children's K-WPPSI performance needs to be interpreted with care; additional raw score analysis was recommended. Administrative revision of the K-WPPSI will be necessary to measure detailed intellectual differences among autistic children.

• Korean Journal of Child Studies
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• v.37 no.5
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• pp.117-128
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• 2016

Objective: This study examined the relationships among preschoolers' temperament, intelligence, and problem behaviors. Intelligence was individually measured by the newly standardized K-WPPSI-IV (2015). Methods: The participants were 113 children (4-6 years old), their mothers and teachers. The following instruments were administered: EAS, K-WPPSI-IV, K-CBCL. Descriptive and correlational analyses were performed using SPSS 18.0. Results and Conclusion: The major results were as follows. First, sociability of temperament was negatively correlated with depression, withdrawal, and internalizing problem behavior. Second, activity and sociability of temperament were positively correlated with the most of the K-WPPSI-IV major indices (VCI, VSI, FRI, PSI, FSIQ, NVI, GAI, CPI). Third, depression, withdrawal, and internalizing problem behavior were negatively correlated with NVI and CPI indices of the K-WPPSI-IV. Attention problem and externalizing problem behavior were negatively correlated with FRI, WMI, FSIQ, NVI, GAI, and CPI indices of K-WPPSI-IV.

• Korean Journal of Child Studies
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• v.37 no.6
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• pp.157-168
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• 2016

Objective: This study examined the intellectual characteristics of 1,700 Korean children aged 2 years, 6 months to 7 years, 7 months across two age ranges (2 years, 6 months to 3 years, 11 months; 4 years to 7 years, 7 months). Methods: Data from the standardization study of the K-WPPSI-IV were analyzed using Korean and American norms and in terms of socioeconomic variables such as region, maternal education level, and child gender. Results: Korean children performed differently from their American counterparts in most subtests and indexes. Verbal subtest performances for Korean children were significantly lower and performance subtest performances for Korean children were significantly higher. There were significant regional differences, with higher performances among children from Seoul than from other areas. Children whose mothers had higher education levels showed higher performances than their counterparts. This trend was more apparent in the older age range. Gender differences were found in most subtests, with girls showing higher scores than boys. Conclusion: This study revealed cross-cultural differences in intellectual characteristics measured with the newly standardized K-WPPSI-IV. In addition, significant effects of socioeconomic variables such as region, maternal education level, and gender were found.

• Korean Journal of Child Studies
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• v.22 no.2
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• pp.1-13
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• 2001

For the development of a short form of the Korean Wechsler Preschool and Primary Scale of Intelligence (K-WPPSI), 360 preschool and primary school children were tested with 4 subtests: Object Assembly, Arithmetic, Block Design, and Comprehension. Transformed scores were derived according to K-WPPSI norms. Interscorer reliability coefficients measured by two independent scorers with the data of 16 children were satisfactory: Comprehension, .92; Arithmetic, .94; Block Design, .97; Object Assembly, .97 Cronbach alpha reliability coefficient for the 4 subtests were very similar to those for the original K-WPPSI, ranging between .71 and .92. Factor analyses revealed 2 factors corresponding to Wechsler's 2 factor theory of intelligence. Discriminant validity was obtained with a Picture-Vocabulary test. Boys performed slightly better than girls on all subtests except for Comprehension. Boys significantly out-performed girls in Arithmetic.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.34 no.4
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• pp.258-267
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• 2023

Objectives: This study aimed to compare the utility of the Psychoeducational Profile-Revised (PEP-R), Korean Wechsler Preschool and Primary Scale of Intelligence, Fourth Edition (K-WPPSI-IV), and Vineland Adaptive Behavior Scale, Second Edition (VABS-II) for evaluating developmental disabilities (DD) in preschool children. Additionally, we examined the correlations between the PEP-R, K-WPPSI-IV, and VABS-II. Methods: A total of 164 children aged 37-84 months were assessed. Children's development was evaluated using the PEP-R, K-WPPSI-IV, VABS-II, Preschool Receptive-Expressive Language Scale, and Korean Childhood Autism Rating Scale, Second Edition. Results: Of the 164 children, 103 had typical development (TD) and 61 had DD. The mean of the PEP-R Developmental Quotient (DQ), K-WPPSI-IV Full-Scale Intelligence Quotient (FSIQ), and VABS-II Adaptive Behavior Composite (ABC) scores were significantly higher in the TD group than in the DD group (p<0.001). The estimated area under the curve of the PEP-R DQ, K-WPPSI-IV FSIQ, and VABS-II ABC scores was 0.953 (95% confidence interval [CI]=0.915-0.992), 0.955 (95% CI=0.914-0.996), and 0.961 (95% CI=0.932-0.991), respectively, which did not indicate a statistically significant difference. The PEP-R DQ scores were positively correlated with the K-WPPSI-IV FSIQ (r=0.90, p<0.001) and VABS-II ABC scores (r=0.84, p<0.001). A strong correlation was observed between the K-WPPSI-IV FSIQ and VABS-II ABC scores (r=0.89, p<0.001). Conclusion: This study found that the PEP-R, K-WPPSI-IV, and VABS-II effectively distinguished DD from TD in preschool children, and no significant differences in utility were observed between them.

• Korean Journal of Child Studies
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• v.25 no.6
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• pp.371-383
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• 2004

In this study, 197 4- to 6- year-old Korean children wereindividually tested with Concepts about Print(CAP Clay, 2000), the Picture Vocabulary Test(Kim, Jang, Lim & Bak, 1996), Korean-Wechsler Preschool and Primary Scale of Intelligence : Verbal Test (K-WPPSI), and the Basic Academy Skills Assessment : Reading(Kim, 2000). Data were analyzed by Pearson-correlation, analysis of variance, and factor analysis. There were significant differences of CAP mean scores by age. Within the subcategories of CAP, Book Orientation Concepts and Print-convention were acquired earlier than other subcategories, followed by Print-direction, Print-order and Advanced Print Concepts in that order. The scores of CAP were positively correlated with the Picture Vocabulary Test, the K-WPPSI verbal test and the reading test.

• Journal of Korea Game Society
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• v.9 no.4
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• pp.45-56
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• 2009

It is necessary for young children to integrate the sense of sight, hearing, touch, etc. for developing their emotion and cognition. Thanks to Information and Communication Technology (ICT) development, young children have more opportunities to use various senses in learning process. However, ICT learning method is more focusing on the sense of sight and hearing, and lacks of integrated recognition and this fact leads to the reason why ICT can not be used as a main education tool. Therefore, this study evaluated the influence of wUbi-Pen(haptic device) on cognition using a computer puzzle program. The results show that young children using a haptic pen have greater intention and performance in object assembly, mazes, picture completion in K-WPPSI test than those of non-using haptic pen. This implies that haptic function should be considered in ICT material and indeed useful in various cognition-related symptoms and diseases.