Construct validity of the sensory integration and praxis tests
Construct validity of the sensory integration and praxis tests
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DOI：
10.1177/153944929601600201
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发表时间：
1996-03-01
期刊：
影响因子：
--
通讯作者：
Bundy, AC
中科院分区：
文献类型：
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作者：
Lai, JS;Fisher, AG;Bundy, AC
本研究的目的是检验感觉统合与实践测验（SIPT）的实践测验的结构效度，并确定基于感觉统合的发展性运动障碍的实践成分是单一的还是多维的障碍。发展性运动障碍是一种计划和执行熟练或非习惯性运动任务的能力受损;然而，其根本原因，甚至是实践是一个单一的或多维的功能，尚未澄清。在这项研究中，Rasch测量模型（Linacre，1989; Wright & Masters，1982; Wright & Stone，1979）被用来探索发展性运动障碍的潜在结构。选择Rasch模型是因为它的使用使我们能够（a）确认SIPT实践测试中单个项目的拟合优度和（B）检查项目难度的层次结构。数据包括来自加拿大和美国的210名受试者的SIPT实践测试的原始分数。Rasch分析的结果显示，这五个SIPT实践测试中的每一个都测量了一个单一的一维结构。当五个测试的项目被组合成一个117项测试时，这些项目继续定义一个单一的实践功能。这表明，一个单一的实践组成部分的基础双方的整合和序列赤字和躯体运动障碍。最后，检查项目的难度层次结构，导致发展的一个单一的筛选测试发育性运动障碍的建议。这些结果对临床实践和未来研究的影响进行了讨论。
The purpose of this study was to examine the construct validity of the praxis tests of the Sensory Integration and Praxis Tests (SIPT) and to determine whether the practic component of sensory integration-based developmental dyspraxia is a unitary or a multidimensional disorder. Developmental dyspraxia is an impaired ability to plan and execute skilled or nonhabitual motor tasks; however, ifs underlying cause, or even whether praxis is a unitary or multidimensional function, is not yet clarified. In this study, the Rasch model of measurement (Linacre, 1989; Wright & Masters, 1982; Wright & Stone, 1979) was used to explore the underlying construct of developmental dyspraxia. The Rasch model was chosen because its use enabled us to (a) confirm goodness-of-fit of individual items within SIPT praxis tests and (b) examine the hierarchical structure of item difficulties.The data included the raw scores of the SIPT praxis tests of 210 subjects from Canada and the United States. The results of the Rasch analyses revealed that each of these five SIPT praxis tests measures a single, unidimensional construct. When the items from the five tests were combined to create a single 117-item test, the items continued to define a single practic function. This indicates that a unitary practic component underlies both bilateral integration and sequencing deficits and somatodyspraxia. Finally, examination of the hierarchy of item difficulties resulted in recommendations for the development of a single screening test for developmental dyspraxia. The implications of these results for clinical practice and future research are discussed.