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Using the rasch measurement model in psychometric analysis of the family effectiveness measure

机译：在家庭有效性测度的心理测度分析中使用拉希测度模型

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Background: Valid assessment of family functioning can play a vital role in optimizing client outcomes. Because family functioning is influenced by family structure, socioeconomic context, and culture, existing measures of family functioning-primarily developed with nuclear, middle-class European American families-may not be valid assessments of families in diverse populations. The Family Effectiveness Measure was developed to address this limitation. Objectives: The aim of this study was to test the Family Effectiveness Measure with data from a primarily low-income African American convenience sample using the Rasch measurement model. Methods: A sample of 607 adult women completed the measure. Rasch analysis was used to assess unidimensionality, response category functioning, item fit, person reliability, differential item functioning by race and parental status, and item hierarchy. Criterion-related validity was tested using correlations with five other variables related to family functioning. Results: The Family Effectiveness Measure measures two separate constructs: The Effective Family Functioning construct was a psychometrically sound measure of the target construct that was more efficient because of the deletion of 22 items. The Ineffective Family Functioning construct consisted of 16 of those deleted items but was not as strong psychometrically. Items in both constructs evidenced no differential item functioning by race. Criterion-related validity was supported for both. Discussion: In contrast to the prevailing conceptualization that family functioning is a single construct, assessed by positively and negatively worded items, use of the Rasch analysis suggested the existence of two constructs. Whereas the Effective Family Functioning scale is a strong and efficient measure of family functioning, the Ineffective Family Functioning scale will require additional item development and psychometric testing.
机译：背景：有效评估家庭功能可以在优化客户结果方面发挥至关重要的作用。由于家庭功能受家庭结构，社会经济背景和文化的影响，因此现有的家庭功能衡量标准（主要是由具有核心能力的中产阶级的欧洲裔美国家庭制定的）可能无法有效评估不同人群的家庭。制定了《家庭有效性衡量标准》以解决这一限制。目的：本研究的目的是使用Rasch度量模型，以低收入的非裔美国人便利性样本的数据为基础，测试家庭有效性度量。方法：对607名成年女性进行了抽样。 Rasch分析用于评估一维性，响应类别功能，项目适合度，人员可靠性，按种族和父母身分区分的项目功能以及项目层次。使用与家庭功能相关的其他五个变量的相关性，测试了与标准相关的有效性。结果：家庭有效性测度测量了两个独立的构造：有效家庭功能构造是从心理上对目标构造进行合理的测量，由于删除了22个项目，因此更有效。无效的家庭运作结构由16个被删除的项目组成，但从心理角度来看并不那么强。两种构造中的项目均证明没有种族差异的项目。两者都支持与标准相关的有效性。讨论：相对于普遍的概念，即家庭功能是一个单一的结构，用正面和负面的措词来评估，使用Rasch分析表明存在两个结构。有效家庭功能量表是衡量家庭功能的有效方法，而无效家庭功能量表则需要进行其他项目开发和心理测试。

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