About one in 25 people imprisoned under a death sentence is likely innocent, according to a new statistical study appearing in the Proceedings of the National Academy of Sciences. And that means it is all but certain that at least several of the 1,320 defendants executed since 1977 were innocent, the study says.About 60% of death sentences are changed to life imprisonment, and the convicts not executed. But innocent convicts sentenced to life also are rarely released; there is much more effort focused on wrongful death sentences than wrongful imprisonment.
The original article is here. The full text is available without charge.