Aim: is simultaneous line-up more suggestive than asking them to say whether each alternative is guilty?
Method: 5 staged thefts in view of students. 5 minutes later they were asked to identify theif from 6 photographs. half shown at same time, half asked to say whether each one was guilty or not, researchers held 12 even though they only showed 6, this is to stop the participants waiting. half shown with thief present, half not.
Results: Thief present - presentation didn't affect outcome: 58% simultaneous, other 50% correctly identified. However thief-absent, 43% simultaneous made false identifications, 17% for other
Conclusions: sequential line-up reduces false identification rate - thus making identification tests less suggestive.
Comments
No comments have yet been made