Individuals with substance use disorder (SUD) often present with cognitive impairments, which may impede their ability to make decisions for themselves, including treatment-related decisions. It is therefore important to assess whether individuals with SUD have adequate decision-making capacity. Indeed, there have not been any capacity assessment tools tailored for use with SUD populations that demonstrate adequate psychometric properties or that have the strong ethical foundation that is required of capacity assessment tools. The Compulsory Assessment and Treatment-Capacity Assessment Tool (CAT-CAT) was designed to fill this gap in the literature. Therefore, the aim of this study was to establish the interrater and test-retest reliability, and discriminative validity of the CAT-CAT. The first of this two-part study recruited healthcare professionals in New Zealand and asked them to conduct a capacity assessment on two hypothetical clients. Generally, excellent interrater reliability (ρ = .998 overall) and test-retest reliability (ρ = .996 overall) was found. The CAT-CAT has exhibited reliability that was at least comparable to widely used capacity assessment tools for other pathologies. The second part of this study involved cognitively normal individuals undergoing capacity assessments to investigate the hypothesis that individuals that do not lack capacity will obtain scores significantly higher than 50% in each section of the CAT-CAT. This hypothesis was met with highly significant results. To conclude, preliminary data suggest that the CAT-CAT has excellent reliability and correctly classifies those with capacity.

中文翻译：

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一种新的物质使用障碍患者决策能力评估工具的心理测量特性：CAT-CAT。

患有物质使用障碍 (SUD) 的人通常会出现认知障碍，这可能会妨碍他们为自己做出决定的能力，包括与治疗相关的决定。因此，评估 SUD 患者是否有足够的决策能力非常重要。事实上，还没有任何能力评估工具专门用于 SUD 人群，这些工具表现出足够的心理测量特性或具有能力评估工具所需的强大道德基础。强制性评估和治疗能力评估工具 (CAT-CAT) 旨在填补文献中的这一空白。因此，本研究的目的是建立 CAT-CAT 的互测信度和重测信度以及判别效度。这项由两部分组成的研究中的第一项在新西兰招募了医疗保健专业人员，并要求他们对两个假设的客户进行能力评估。通常，发现了出色的评分者间信度（整体 ρ = .998）和重测信度（整体 ρ = .996）。CAT-CAT 表现出的可靠性至少可与广泛使用的其他病理能力评估工具相媲美。本研究的第二部分涉及认知正常的个体进行能力评估，以调查不缺乏能力的个体将在 CAT-CAT 的每个部分中获得显着高于 50% 的分数的假设。这一假设得到了非常显着的结果。总而言之，初步数据表明 CAT-CAT 具有出色的可靠性并正确分类有能力的人。