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The Great Engine that Couldn't: Science, Mistaken Identifications, and the Limits of Cross-Examination


Jules Epstein


Widener University - School of Law

September 24, 2007

Stetson Law Review, Vol. 36, No. 3, 2007
Widener Law School Legal Studies Research Paper No. 08-23

Abstract:     
Wigmore's assertion that cross-examination is the greatest engine for the search for the truth comes with a caveat: it works best for the untruthful witness, or for eliciting facts known to the witness but not acknowledged on direct examination. In the typical eyewitness-based prosecution, neither condition obtains. The eyewitness is not untruthful but may be mistaken; and eyewitnesses do not know the factors [weapons focus, the deleterious effect of stress on eyewitness accuracy, the problem of "own-race bias" in cross-racial crimes] that may have caused the mistake.

This article traces cross-examination to its origins and demonstrates that its utility (as originally intended and as developed over centuries) is limited in eyewitness cases. The article concludes that other tools - better jury instructions, and the use of expert witnesses - are essential to ensure a complete search for truth in identification cases.

Number of Pages in PDF File: 62

Keywords: cross-examination, eyewitness, mistaken identification, witness, evidence

JEL Classification: K14, K4

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Date posted: March 5, 2008  

Suggested Citation

Epstein, Jules, The Great Engine that Couldn't: Science, Mistaken Identifications, and the Limits of Cross-Examination (September 24, 2007). Stetson Law Review, Vol. 36, No. 3, 2007; Widener Law School Legal Studies Research Paper No. 08-23. Available at SSRN: http://ssrn.com/abstract=1100090

Contact Information

Jules Epstein (Contact Author)
Widener University - School of Law ( email )
4601 Concord Pike
P.O. Box 7286
Wilmington, DE 19803-0474
United States
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