Support
A 1980 study found that in New York, there were an average of two additional homicides in the month after an execution, consistent with a brutalization effect. A 1994 study found evidence of this effect in Oklahoma, but only in relation to stranger homicides, while a 1998 study found strong evidence to support a hypothesis relating to the total number of homicides in Oklahoma.Opposition
A 1978 study found no evidence to support the brutalization hypothesis. A 1994 study also found no evidence to support it with regards to overall homicides in Oklahoma.References
Capital punishment Penology Criminology {{capital-punishment-stub