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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

  • Korean Journal of Occupational Therapy
  • Abbr : Korean J of Occup Ther
  • 2018, 26(2), pp.81-97
  • DOI : 10.14519/jksot.2018.26.2.07
  • Publisher : Korean Society Of Occupational Therapy
  • Research Area : Medicine and Pharmacy > Working Therapeutics
  • Received : April 30, 2018
  • Accepted : May 28, 2018
  • Published : June 30, 2018

Ahn, So-Hyun 1 Yoo, Eun-Young 2 Lee, Soon Hang 1

1이화여자대학교
2연세대학교

Accredited

ABSTRACT

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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