Convicting the innocent
May 21, 2012 2 Comments
Michigan and Northwestern law schools have released a study of wrongful convictions and exonerations in recent decades (via AP):
More than 2,000 people who were falsely convicted of serious crimes have been exonerated in the United States in the past 23 years, according to a new archive compiled at two universities.
There is no official record-keeping system for exonerations of convicted criminals in the country, so academics set one up. The new national registry, or database, painstakingly assembled by the University of Michigan Law School and the Center on Wrongful Convictions at Northwestern University School of Law, is the most complete list of exonerations ever compiled.
The database compiled and analyzed by the researchers contains information on 873 exonerations for which they have the most detailed evidence. The researchers are aware of nearly 1,200 other exonerations, for which they have less data.
They found that those 873 exonerated defendants spent a combined total of more than 10,000 years in prison, an average of more than 11 years each. Nine out of 10 of them are men and half are African-American.
Nearly half of the 873 exonerations were homicide cases, including 101 death sentences. Over one-third of the cases were sexual assaults.
Not surprisingly, there’s some common failures in our system that lead to this:
In half of the 873 exonerations studied in detail, the most common factor leading to false convictions was perjured testimony or false accusations. Forty-three percent of the cases involved mistaken eyewitness identification, and 24 percent of the cases involved false or misleading forensic evidence.
In two out of three homicides, perjury or false accusation was the most common factor leading to false conviction. In four out of five sexual assaults, mistaken eyewitness identification was the leading cause of false conviction.
Certainly seems clear that we need to introduce some more safeguards with how we use eyewitness testimony. And as for the perjury, just maybe if we stopped offering jailhouse snitches reduced time in prison to concoct jailhouse confessions that rarely seem to happen in real life, that would sure help to. Of course, 873 is a tiny drop in the bucket of all the convictions. Suffice it to say, though, that the 873 represent systematic flaws in our justice system that I would guess are responsible for at least 100x that amount of wrongful convictions.

