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KMID : 0603920180260020081
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Journal of Korean Academy of Occupational Therapy
2018 Volume.26 No. 2 p.81 ~ p.97
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A Validation Study of the Gross Motor Scale of Korean Version of Bayley Scales of Infant and Toddler Development, Third Edition
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Ahn So-Hyun
Yoo Eun-Young
Lee Soon-Hang
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Abstract
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Objective: This study verified the psychometric properties of gross motor scale of Korean version of Bayley Scales of Infant and Toddler Development-Third Edition(K-Bayley-Ⅲ) through item analyses, validity, and reliability evidence.
Methods: Date were obtained from a stratified sample of 1,764 infants and toddlers divided into 17 age groups, 16 days through 42 months 15days old, who reflected key demographic variables in the national population.
Results: Firstly, the analysis of the degree of item difficulty indicated that items were appropriately placed in the order of difficulty. Most baseline items showed a 90% pass rate. Secondly, Inter-item consistency showed excellent levels and items were highly reliable in terms of test-retest reliability and inter-rater reliability. Thirdly, in terms of the construct validity, the Gross Motor Scale of K-Bayley-Ⅲ score revealed a high degree of correlation with the Motor composite score but a significant moderate correlation with the Language composite score, providing evidence of its convergent and discriminant validity.
Conclusion: In this study, K-Bayley-Ⅲ gross motor scale was proved to be a valid and reliable measure for evaluating the development of gross motor in Korean infants.
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KEYWORD
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Gross motor scale, Item analysis, Korean version of Bayley scale of Infant and Toddler Development-Third Edition(K-Bayley-Ⅲ), Reliability, Validity
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