The testimonies of insider witnesses are often key to prosecutions of international crimes, despite significant trustworthiness concerns. However, we know little about the practice of judicial assessments of insider testimonies, that is, which factors the judges consider relevant to relying on insider testimony. With this article, we set out to provide a comprehensive, explorative examination of the insider witness assessment factors used by the trial judges at the International Criminal Tribunal for the former Yugoslavia, the International Criminal Tribunal for Rwanda and the International Criminal Court in 1996–2019. By using multiple correspondence analysis, we show that the factors related to insider witness assessment outcomes are generally similar across the tribunals and tend to focus on the contents of the testimonies, with less attention given to credibility or competence concerns. This research constitutes the first systematic quantitative analysis and cross-institutional comparison of insider witness assessment practice at an international level.

尽管存在重大的可信赖性问题，但内幕证人的证词通常是起诉国际罪行的关键。但是，我们对内部人证词司法评估的做法知之甚少，也就是说，法官认为与依赖内部人证词有关的因素。通过本文，我们着手对前南斯拉夫问题国际刑事法庭，卢旺达问题国际刑事法庭和国际刑事法院审判法官在1996-2019年期间使用的内幕证人评估因素进行全面的探索性研究。 。通过使用多重对应分析，我们发现与内部证人评估结果相关的因素在各个法庭上通常是相似的，并且往往侧重于证词的内容，对信誉或能力问题的关注较少。这项研究是国际上首次对内幕证人评估实践进行系统的定量分析和跨机构比较。