The Deterrence Effect and Criminal Justice

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Over the years a theory known as the deterrence effect has been proposed to the world of capital punishment. People believe that if you do something wrong, in this case, kill someone, then you will be put to death therefore preventing you from committing that wrong act again. This theory also states that by viewing or hearing about your punishment then others around you will not follow in your footsteps which will decrease the number of criminal acts committed. Econometric studies have started a panel data in order to view the validity of this theory. One of their hugest studies examines the validity of this theory. One of their hugest studies examined 3,054 counties in the United States from 1977 and 1996. The studies concluded that “murder rate is significantly reduced by both death sentences and executions…each execution resulted in 18 fewer murders.” Another study based on state level data from 1997-1999 found that the “death sentence deters 4.5 murders and an execution deters 3 murders.” Three is a significant drop from eighteen. This brings me to my first question. Is the det...

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