Judges, jurors and other triers of fact often rely upon eyewitness evidence in criminal trials, but eyewitness memory is not always accurate and can sometimes be contaminated. The I-I-Eye is an evidence-based teaching aid designed to improve the evaluation of eyewitness evidence in legal settings. We aimed to further test the I-I-Eye and examine whether adding an active component to this teaching aid improves its effectiveness. Two experiments (N = 324 and N = 322) were conducted using a 2 (case strength: Weak vs. Strong) by 3 (teaching aid condition: Control vs. Passive vs. Active) between-subjects design. Results of both experiments showed that the I-I-Eye can help jurors recognize strong eyewitness cases, although it was not particularly effective when the evidence was weak. It was also found that the active component did not further improve sensitivity. We discuss whether teaching aids such as the I-I-Eye may assist decision-makers in the evaluation of eyewitness evidence, while highlighting some of its main limitations found in our results.
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