(Poulin, 2007) suggests that, “experts can help jurors understand the way in which vagaries perception and memory undermine the accuracy of eyewitness identification” (p.27). She stated that, “they also illustrate the ways in which … perception and memory can generate false but convincing identification testimony” (Poulin, 2007, para 2.). Confidence shown by a witness can positively persuade a jury but it is not necessarily synonymous with accuracy.
In this case, the three boys at the centre of the De Oliveira case gave a testimony. According to (CBC, 2010), one of the boys told the court, “someone pushed his two friends onto the tracks and tried to push him as well but that he was able to avoid falling to the tracks”. He added that, “he thought the man who pushed them had mental health issues”. He even went on to say, "He wasn't looking at me; he was looking through me" (paras.