Derailment, a newly mapped construct describing difficulty reconciling perceived changes in identity and self-direction, offers researchers a unique lens for understanding adjustment. As identity development is a lifelong process, establishing the impartiality of the primary measure for derailment across a broad age range is necessary. Across a cross-sectional sample of emerging, young, and midlife adults (N = 1,420), we tested preregistered hypotheses concerning whether the Derailment Scale-6 (DS-6) demonstrates measurement invariance, and the extent to which levels and correlates of derailment differ with age. The DS-6 exhibited configural, metric, and partial scalar invariance across the three age groups. In terms of effect size, statistical differences detected at the scalar level were hardly larger than negligible noninvariance effects, suggesting in sum that the DS-6 is adequate for assessing and comparing derailment among those roughly 18–70 years. In general, derailment was related to greater distress and identity exploration, and lower identity commitment, sense of purpose in life, and future time perspective (FTP). We further found that derailment shares a modest negative association with age; it is more positively associated with identity exploration among younger individuals; and it is more negatively associated with identity commitment, sense of purpose in life, and FTP among older individuals. With the broadest age range and most highly powered set of tests studying derailment to date, this investigation bolsters confidence in our tools for assessing derailment and has taken the initial steps toward sketching the form and function of perceived identity change over the lifespan. (PsycInfo Database Record (c) 2021 APA, all rights reserved)

中文翻译：

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脱轨量表 6 的不变性：测试整个成年期出轨的测量和相关性。

出轨是一种新绘制的结构，描述了协调身份和自我方向的感知变化的困难，为研究人员提供了一个理解调整的独特视角。由于身份发展是一个终生的过程，因此有必要在广泛的年龄范围内确定出轨的主要措施的公正性。在新兴、年轻和中年成年人的横截面样本中（N= 1,420)，我们测试了关于脱轨量表 6 (DS-6) 是否证明测量不变性以及脱轨水平和相关性随年龄变化的程度的预先注册假设。DS-6 在三个年龄组中表现出配置、度量和部分标量不变性。就效应大小而言，在标量水平上检测到的统计差异几乎不大于可忽略的非不变效应，这表明 DS-6 足以评估和比较大约 18-70 岁之间的出轨。一般来说，出轨与更大的痛苦和身份探索、更低的身份承诺、生活目标感和未来时间观（FTP）有关。我们进一步发现，出轨与年龄有适度的负相关；它与年轻人的身份探索更积极相关；它与老年人的身份承诺、生活目标感和 FTP 呈负相关。通过迄今为止研究出轨的最广泛的年龄范围和最强大的测试集，这项调查增强了对我们评估出轨的工具的信心，并迈出了初步的步骤，以勾勒出在整个生命周期中感知到的身份变化的形式和功能。（PsycInfo 数据库记录 (c) 2021 APA，保留所有权利）这项调查增强了我们对评估出轨的工具的信心，并采取了初步措施，勾勒出在整个生命周期中感知到的身份变化的形式和功能。（PsycInfo 数据库记录 (c) 2021 APA，保留所有权利）这项调查增强了我们对评估出轨的工具的信心，并采取了初步措施，勾勒出在整个生命周期中感知到的身份变化的形式和功能。（PsycInfo 数据库记录 (c) 2021 APA，保留所有权利）