This systematic literature review examines the cognitive processes involved in sight interpreting/translation (SIT). Following the PRISMA approach, we review the findings of 49 publications identified through a comprehensive search strategy. The analysis shows that the comprehension processes involved in SIT appear to differ from those in reading for other purposes. It also highlights that three specific cognitive features may increase the processing demands of the task: resisting visual interference, dealing with memory requirements, and managing coordination between the processes at hand. The review then addresses the effects of training and professional experience. Drawing on these results, we critically discuss three key gaps in our current understanding of cognitive processing in SIT. They relate to the precise nature of the underlying comprehension processes, the cognitive constraints, and the development of competence. On this basis, we propose directions for future research
