The Devastating Impact of Prior Crimes Evidence – And Other Myths of the Criminal Justice Process
Ronald J. Allen
Northwestern University Law School
University of Texas School of Law
September 2, 2010
U of Texas Law, Public Law Research Paper No. 183
Northwestern Public Law Research Paper No. 10-74
There is abundant empirical evidence that prior criminal convictions weigh heavily in jurors’ decision about acquittal and conviction. That same evidence suggests that jurors learning that defendant has been convicted of prior crimes makes very little difference to conviction rates. This seeming paradox is examined in considerable detail. Understanding how and why it arises suggests that the tendency in American law to suppress information about priors (except under special circumstances) is a self-defeating strategy that not only lacks a convincing epistemic foundation but may also be responsible for the inadvertent conviction of innocent defendants. Arguably, it is often not the admission of priors that is unfairly prejudicial so much as their exclusion.
Number of Pages in PDF File: 40
Keywords: prior convictions, exclusionary rules, silence, Rule 403, Rule 404, jury instructions, conviction rates, NCSC, defendant testimony
Date posted: September 6, 2010 ; Last revised: October 25, 2010
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