Eyewitness testimony is evidence that is much in demand in international arbitration. In the selection of witnesses, one should take into account not only the relevance and significance of the information that people can provide, but also their psychological peculiarities. The authors give practical recommendations for the selection of witnesses based on their professional experience taking into account the provisions of the report of the Commission of the International Chamber of Commerce The Accuracy of Fact Witness Memory in International Arbitration published in 2020.