Unresolved states of mind regarding experiences of loss/abuse (U/d) are identified through lapses in the monitoring of reasoning, discourse, and behavior surrounding loss/abuse in response to the Adult Attachment Interview. Although the coding system for U/d has been widely used for decades, the individual indicators of unresolved loss/abuse have not been validated independently of the development sample. This study examined the psychometric validity of U/d, using individual participant data from 1,009 parent–child dyads across 13 studies. A latent class analysis showed that subsets of commonly occurring U/d indicators could differentiate interviewees with or without unresolved loss/abuse. Predictive models suggested a psychometric model of U/d consisting of a combination of these common indicators, with disbelief and psychologically confused statements regarding loss being especially important indicators of U/d. This model weakly predicted infant disorganized attachment. Multilevel regression analysis showed no significant association between ratings of unresolved other trauma and infant disorganized attachment, over and above ratings of unresolved loss/abuse. Altogether, these findings suggest that the coding system of U/d may have been overfitted to the initial development sample. Directions for further articulation and optimization of U/d are provided.

关于失去/虐待经历的未解决的心理状态（U/d）是通过在成人依恋访谈中对围绕失去/虐待的推理、话语和行为的监控失误来识别的。尽管 U/d 编码系统已广泛使用数十年，但未解决的损失/滥用的各个指标尚未独立于开发样本进行验证。本研究使用 13 项研究中 1,009 名亲子二人组的个体参与者数据，检验了 U/d 的心理测量有效性。潜在类别分析表明，常见 U/d 指标的子集可以区分受访者是否存在未解决的损失/虐待。预测模型提出了 U/d 的心理测量模型，该模型由这些常见指标的组合组成，其中关于损失的怀疑和心理上困惑的陈述是 U/d 特别重要的指标。该模型对婴儿混乱依恋的预测能力较弱。多级回归分析显示，未解决的其他创伤的评级与婴儿混乱的依恋之间没有显着关联，高于未解决的损失/虐待的评级。总而言之，这些发现表明 U/d 的编码系统可能已经过度适合最初的开发样本。提供了进一步阐明和优化 U/d 的方向。