prevents crime Dr. Jeffrey Fagan of Columbia University national survey qualsiasi studio recente Discussion of Recent Deterrence Studies little evidence http://www.deathpenaltyinfo.org... The science http://www.deathpenaltyinfo.org... few credible studies which show any kind of deterrent effect reputable scholars studies have shown not the case it’s not clear that the death penalty deters crime studies have shown national survey qualsiasi studio recente this webpage criticizing the studies little evidence prevents crime Discussion of Recent Deterrence Studies Discussion of recent deterrence studies studies have shown not the case The science Discussion of Recent Deterrence Studies no evidence doubt