Preston Kathleen Suzanne Johnson, Gottfried Allen W, Park Jonathan J, Manapat Patrick Don, Gottfried Adele Eskeles, Oliver Pamella H
California State University, Fullerton, CA, USA.
California State University, Northridge, CA, USA.
Educ Psychol Meas. 2018 Jun;78(3):409-429. doi: 10.1177/0013164417690198. Epub 2017 Feb 5.
Measurement invariance is a prerequisite when comparing different groups of individuals or when studying a group of individuals across time. This assures that the same construct is assessed without measurement artifacts. This investigation applied a novel approach of simultaneous parameter linking to cross-sectional and longitudinal measures of the construct of positive family relationships. Previously, a scale to measure this construct in mothers was developed longitudinally using the nominal response model of item response theory. In this study, this methodology was conducted for the first time to develop such a scale for children. The data for both informants derived from the Fullerton Longitudinal Study and encompassed 9 annual assessments spanning 8-years (age 9-17 years). This permitted linking across informants studied concurrently and prospectively. This procedure minimized measurement error, furnished a common metric across informants and time and established measurement invariance. Resulting thetas revealed a significant degree of concordance between informants across assessment waves as well as stability of individual differences for both informants over time. This psychometric investigation is unique because it simultaneously established invariance of a construct across informants and time. Implications for future research are discussed.
当比较不同个体组或研究同一组个体随时间的变化时，测量不变性是一个先决条件。这确保了在没有测量误差的情况下对相同的结构进行评估。本研究采用了一种新颖的方法，即同时进行参数链接，以对积极家庭关系结构进行横断面和纵向测量。此前，使用项目反应理论的名义反应模型纵向开发了一种测量母亲这一结构的量表。在本研究中，首次采用这种方法为儿童开发这样一种量表。两位信息提供者的数据均来自富勒顿纵向研究，涵盖了8年（9至17岁）的9次年度评估。这使得能够对同时进行前瞻性研究的信息提供者进行链接。这一程序将测量误差降至最低，提供了跨信息提供者和时间的通用度量标准，并建立了测量不变性。所得的θ值显示，在各评估波次中，信息提供者之间存在显著程度的一致性，并且两位信息提供者的个体差异随时间保持稳定。这项心理测量学研究具有独特性，因为它同时建立了一个结构在信息提供者和时间上的不变性。文中还讨论了对未来研究的启示。
