Weber Nathan, Brewer Neil
School of Psychology, Flinders University, Adelaide, South Australia, Australia.
J Exp Psychol Appl. 2008 Mar;14(1):50-60. doi: 10.1037/1076-898X.14.1.50.
Eyewitness testimony plays a critical role in Western legal systems. Three experiments extended M. Goldsmith, A. Koriat, and A. Weinberg-Eliezer's (2002) framework of the regulation of grain size (precision vs. coarseness) of memory reports to eyewitness memory. In 2 experiments, the grain size of responses had a large impact on memory accuracy. Further, participants achieved a compromise between the accuracy and informativeness of their testimony by volunteering precise answers only when likely to be correct. The level of detail reported was strongly, positively related to confidence in the accuracy of the response. This highlights the importance of considering the level of detail, not just the accuracy, of eyewitness testimony.
目击者证词在西方法律体系中起着关键作用。三项实验将M. 戈德史密斯、A. 科里亚和A. 温伯格 - 埃利泽（2002年）关于记忆报告粒度（精确性与粗略性）调节的框架扩展到了目击者记忆。在两项实验中，回答的粒度对记忆准确性有很大影响。此外，参与者通过仅在可能正确时主动提供精确答案，在证词的准确性和信息量之间达成了妥协。报告的细节程度与对回答准确性的信心密切正相关。这凸显了考虑目击者证词细节程度而非仅仅准确性的重要性。
