A growing majority of people living in Residential Care Facilities (RCFs) for older people have dementia. Yet the implementation of evidence-based Dementia Design Principles (DDPs), known to reduce symptoms and improve wellbeing, remains limited. This paper reports on the development and application of Plan-EAT, a floorplan-based method of assessing dementia design quality in RCFs. Through the analysis of 34 published architectural exemplars, the method identifies strengths and weaknesses in the layouts of residential care buildings, across 39 assessment criteria organized under 9 DDPs. The paper concludes that the Plan-EAT could benefit architectural practice by providing an evidence-based means of assessing layout planning quality, in both existing cases and emerging RCF design proposals. The findings also highlight the need for care, where reliance is placed on published case studies, to inform the design of dementia supportive environments.

越来越多居住在老年人住宅护理设施 (RCF) 中的人患有痴呆症。然而，以证据为基础的痴呆症设计原则 (DDP) 的实施仍然有限，该原则以减轻症状和改善健康着称。本文报告了 Plan-EAT 的开发和应用，这是一种基于平面图的方法，用于评估 RCF 中的痴呆设计质量。通过对 34 个已发布的建筑范例的分析，该方法确定了住宅护理建筑布局的优势和劣势，跨越 9 个 DDP 下组织的 39 个评估标准。该论文的结论是，Plan-EAT 可以通过提供一种基于证据的方法来评估现有案例和新兴的 RCF 设计提案中的布局规划质量，从而使建筑实践受益。调查结果还强调了护理的必要性，