In 5 experiments and a pilot study, a total of 1,232 undergraduates watched a series of slides depicting a single auto–pedestrian accident. The purpose of these experiments was to investigate how information supplied after an event influences a witness’s memory for that event. Ss were exposed to either consistent, misleading, or irrelevant information after the accident event. Results show that misleading information produced less accurate responding on both a yes–no and a 2-alternative forced-choice recognition test. Further, misleading information had a larger impact if introduced just prior to a final test rather than immediately after the initial event. The effects of misleading information cannot be accounted for by a simple demand-characteristics explanation. Overall results suggest that information to which a witness is exposed after an event, whether that information is consistent or misleading, is integrated into the witness’s memory of the event.
Loftus, E. F., Miller, D. G., & Burns, H. J. (1978). Semantic integration of verbal information into a visual memory. Journal of Experimental Psychology: Human Learning and Memory, 4(1), 19-31.
http://dx.doi.org/10.1037/0278-7393.4.1.19