Psychometric evaluation of the pictorial scale of perceived movement skill competence in Chinese children: An item response theory analysis

IF 1.8 4区医学 Q2 PEDIATRICS Child Care Health and Development Pub Date : 2024-05-27 DOI:10.1111/cch.13275

Xuanxi Li, Zheng Su, Li Wang, Jing Li, Yucui Diao

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Abstract

Aim

This study aimed to investigate the psychometric characteristics of the Pictorial Scale of Perceived Movement Skill Competence (PMSC) in Chinese children, utilizing the principles of item response theory (IRT).

Methods

A total of 284 children (147 boys), aged 4–10 years (M_age = 7.39, SD = 2.18), from four schools were recruited for testing, adhering to the principle of random sampling. The Rasch model was applied to evaluate the rating scale validity, local independence, scale dimensionality, person and item fit statistics, and differential item functioning (DIF).

Results

(1) The rating scale validity was confirmed by the monotonically increasing trend in both average item difficulty measures and Andrich thresholds. (2) However, the observation that standardized residual correlations for all items remained below 0.3 unequivocally confirmed the presence of local independence among the variables. (3) The scale's dimensions were substantiated, with Rasch measures explaining 40.6% of total variance, exceeding the 40% threshold. Additionally, the first contrast had an eigenvalue of 1.8 and explained 8.80% of the variance, both exceeding the minimum 3:1 ratio. Consequently, the unidimensionality assumption of the item was supported. (4) Person and item fit statistics indicated requisite reliability and separation, with all achieving suitable infit and outfit measures, and point-biserial correlations exceeding 0.55. (5) Regarding gender DIF, it was observed that the majority of items did not exhibit statistically significant gender DIF effects (p > 0.05) except item 8 (Bounce a ball, t = −2.74, p < 0.01, DIF = −0.51).

Conclusion

Rasch analysis revealed that the instrument exhibited strong scale validity among Chinese children, adhering to the Rasch model's unidimensionality and local independence principles, with robust person and item reliability and separation. All items demonstrated a good fit. Additionally, the significant gender difference in item 8 (Bounce a ball) warrants further consideration. In conclusion, PMSC is suitable for assessing the PMSC of Chinese children.

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中国儿童感知运动技能能力图形量表的心理计量学评价：项目反应理论分析

目的：本研究旨在运用项目反应理论（IRT）的原理，研究中国儿童感知运动技能能力图形量表（PMSC）的心理测量学特征：方法：按照随机抽样的原则，从四所学校招募了284名4-10岁的儿童（147名男孩）（年龄=7.39，标准差=2.18）进行测试。结果：（1）平均项目难度测量值和安德里希阈值均呈单调递增趋势，证实了评分量表的效度。(2）然而，所有项目的标准化残差相关均低于 0.3，这明确证实了变量之间存在局部独立性。(3）量表的维度得到了证实，Rasch 测量解释了总方差的 40.6%，超过了 40%的临界值。此外，第一个对比的特征值为 1.8，解释了 8.80% 的方差，均超过了 3:1 的最低比例。因此，项目的单维假设得到了支持。(4) 人称和项目拟合度统计结果显示了必要的可靠性和分离度，所有项目都达到了合适的 infit 和 outfit 测量，点-倍相关超过了 0.55。(5) 在性别 DIF 方面，除第 8 项（弹球，t = -2.74，p）外，大多数项目在统计上没有显著的性别 DIF 效应（p > 0.05）：Rasch 分析表明，该量表在中国儿童中表现出很强的量表效度，符合 Rasch 模型的单维性和局部独立性原则，具有稳健的人和项目信度及分离度。所有项目均表现出良好的拟合性。此外，第 8 项（弹球）的显著性别差异值得进一步考虑。总之，PMSC 适用于评估中国儿童的 PMSC。

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来源期刊

Child Care Health and Development 医学-小儿科

CiteScore

3.40

自引率

5.30%

发文量

136

审稿时长

4-8 weeks

期刊介绍： Child: care, health and development is an international, peer-reviewed journal which publishes papers dealing with all aspects of the health and development of children and young people. We aim to attract quantitative and qualitative research papers relevant to people from all disciplines working in child health. We welcome studies which examine the effects of social and environmental factors on health and development as well as those dealing with clinical issues, the organization of services and health policy. We particularly encourage the submission of studies related to those who are disadvantaged by physical, developmental, emotional and social problems. The journal also aims to collate important research findings and to provide a forum for discussion of global child health issues.