Department of Occupational Therapy, Faculty of Medicine, Nursing and Health Sciences, Monash University-Peninsula Campus, Frankston, Victoria, Australia.
Res Dev Disabil. 2011 Jan-Feb;32(1):253-61. doi: 10.1016/j.ridd.2010.09.022. Epub 2010 Oct 30.
The Assessment of Children's Hand Skills (ACHS) is a new assessment tool that utilizes a naturalistic observational method to capture children's real-life hand skill performance when engaging in various types of activities. The ACHS also intends to be used with both typically developing children and those presenting with disabilities. The purpose of this study was to further investigate the construct validity of the ACHS using the Rasch analysis. Participants included 64 typically developing children and 70 children with disabilities in the age range of 2-12 years. Rasch analysis results confirmed the appropriateness of the ACHS's 6-level rating scale in this combined group of children. All 22 activity items and 19 of the 20 hand skill items in the ACHS formed a unidimensional scale and were ordered according to difficulty as clinically and developmentally expected. The ACHS also exhibited sufficient response validity and item-difficulty range when applied to children with disabilities as well as typically developing, preschool-age children. Furthermore, less than half of the ACHS items were found to exhibit differential item functioning with regard to gender (5 activity items) and disability (2 activity items and 7 hand skill items). Therefore, the ACHS shows preliminary evidence of construct validity for its clinical use in assessing children's hand skill performance in real-life contexts.
《儿童手部技能评估量表》（ACHS）是一种新的评估工具，采用自然观察法，在儿童参与各种活动时捕捉其真实的手部技能表现。该量表也旨在用于评估正常发育的儿童和有残疾的儿童。本研究旨在进一步使用 Rasch 分析探讨 ACHS 的结构效度。参与者包括 64 名正常发育的儿童和 70 名 2-12 岁有残疾的儿童。Rasch 分析结果证实，在这组混合儿童中，ACHS 的 6 级评分量表是合适的。ACHS 的所有 22 项活动项目和 20 项手部技能项目中的 19 项都形成了一个一维尺度，并按照临床和发育预期的难度顺序排列。当应用于残疾儿童和正常发育的学龄前儿童时，ACHS 还表现出足够的反应有效性和项目难度范围。此外，只有不到一半的 ACHS 项目在性别（5 项活动项目）和残疾（2 项活动项目和 7 项手部技能项目）方面表现出项目区分功能的差异。因此，ACHS 在评估儿童在现实生活情境中的手部技能表现方面，具有初步的结构效度证据，可用于临床。
