It is well established internationally that there is a high prevalence of intellectual disability (ID) among people in police custody. Some people with ID may face particular challenges in negotiating the forensic formalities adopted by police at the pre-trial stage of the criminal process. These challenges need to be acknowledged and mitigated through appropriate procedural safeguards in order to, at once, preserve the fact-finding accuracy of criminal investigations and minimise the risk of securing a wrongful conviction. And yet, despite the formative role which pre-trial procedures exert over the trajectory of proceedings, little is known about the experiences of people with ID during their initial interaction with law enforcement officers. In an attempt to address this research lacuna, we reviewed six databases systematically to identify studies that explore such experiences. Seven studies with a total of 1199 participants were identified. Frequently, participants with ID describe challenges in police custody, experiencing particular difficulties in understanding and communicating information. They report a paucity of appropriate supports generally in this setting and an unmet need for the provision of procedural and emotional supports. Consistent implementation of legal safeguards is necessary, along with consistent availability of accessible practical measures to support people with ID within the criminal justice system.

在国际上公认，在警方羁押的人中，智障（ID）的患病率很高。一些身分证件的人在谈判警方在犯罪程序的预审阶段采用的法证手续时可能面临特殊的挑战。这些挑战需要通过适当的程序性保护措施予以承认和缓解，以便立即保持刑事调查的事实调查准确性，并最大程度地降低错误定罪的风险。然而，尽管预审程序在诉讼程序轨迹上起着形成性的作用，但对身份识别人员在与执法人员的最初互动中的经历知之甚少。为了解决这个研究空白，我们系统地审查了六个数据库，以找出探索此类经验的研究。共确定了7项研究，共有1199名参与者。具有ID的参与者通常会描述警察拘留所面临的挑战，在理解和交流信息方面遇到特殊的困难。他们报告说，在这种情况下，通常缺乏适当的支持，并且对程序和情感支持的需求未得到满足。必须始终贯彻执行法律保障措施，并始终如一地提供可访问的实际措施，以在刑事司法系统中为身分证人提供支持。在理解和交流信息方面遇到特殊的困难。他们报告说，在这种情况下，通常缺乏适当的支持，并且对程序和情感支持的需求未得到满足。必须始终贯彻执行法律保障措施，并始终如一地提供可访问的实际措施，以在刑事司法系统中为身分证人提供支持。在理解和交流信息方面遇到特殊的困难。他们报告说，在这种情况下，通常缺乏适当的支持，并且对程序和情感支持的需求未得到满足。必须始终贯彻执行法律保障措施，并始终如一地提供可访问的实际措施，以在刑事司法系统中为身分证人提供支持。