English Audio Request

This might make some sense if crime rates had also tripled. But they haven't: rather, even as crime has fallen, the sentences served by criminals have grown, thanks in large part to mandatory minimums and draconian three-strikes rules—politically popular measures that have shown little deterrent effect but have left the prison system overflowing with inmates. The vogue for incarceration might also make sense if the prisons repaid society's investment by releasing reformed inmates who behaved better than before they were locked up. But that isn't the case either: half of those released are back in prison within three years. Indeed, research by the economists Jesse Shapiro of the University of Chicago and M. Keith Chen of Yale indicates that the stated purpose of incarceration, which is to place prisoners under harsh conditions on the assumption that they will be "scared straight," is actively counterproductive. Such conditions—and U.S. prisons are astonishingly harsh, with as many as 20 percent of male inmates facing sexual assault—typically harden criminals, making them more violent and predatory. Essentially, when we lock someone up today, we are agreeing to pay a large (and growing) sum of money merely to put off dealing with him until he is released in a few years, often as a greater menace to society than when he went in.