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Taking a Stand on Taking the Stand: The Effect of a Prior Criminal Record on the Decision to Testify and On Trial Outcomes


Theodore Eisenberg


Cornell University - Law School

Valerie P. Hans


Cornell University - School of Law

August 8, 2007

Cornell Legal Studies Research Paper No. 07-012

Abstract:     
This article uses unique data from over 300 criminal trials in four large counties to study the relations between the existence of a prior criminal record and defendants testifying at trial, between testifying at trial and juries' learning about a criminal record, and between juries' learning about a criminal record and their decisions to convict or acquit. Sixty percent of defendants without criminal records testified compared to 45 percent with criminal records. For testifying defendants with criminal records, juries learned of those records in about half the cases. Juries rarely learned about criminal records unless defendants testified. After controlling for evidentiary strength and other factors, statistically significant associations exist (1) between the existence of a criminal record and the decision to testify at trial, (2) between the defendant testifying at trial and the jury learning about the defendant's prior record, and (3) in cases with weak evidence, between the jury learning of a criminal record and conviction. For cases with strong evidence against defendants, learning of criminal records is not strongly associated with conviction rates. Juries appear to rely on criminal records to convict when other evidence in the case normally would not support conviction. Use of prior record evidence may therefore lead to erroneous convictions. Prosecutors and judges should consider the increased likelihood of erroneous conviction based on use of prior convictions in decisions to prosecute and in evidentiary rulings.

Number of Pages in PDF File: 33

Keywords: Juries, Evidence, Criminal Record

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Date posted: July 5, 2007  

Suggested Citation

Eisenberg, Theodore and Hans, Valerie P., Taking a Stand on Taking the Stand: The Effect of a Prior Criminal Record on the Decision to Testify and On Trial Outcomes (August 8, 2007). Cornell Legal Studies Research Paper No. 07-012. Available at SSRN: http://ssrn.com/abstract=998529 or http://dx.doi.org/10.2139/ssrn.998529

Contact Information

Theodore Eisenberg (Contact Author)
Cornell University - Law School ( email )
524 College Ave
Myron Taylor Hall
Ithaca, NY 14853
United States
607-255-6477 (Phone)
607-255-7193 (Fax)
Valerie P. Hans
Cornell University - School of Law ( email )
524 College Ave
Myron Taylor Hall
Ithaca, NY 14853
United States
607-255-0095 (Phone)
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