Brady grades and crime rates
Here's a paper by Denton Bramwell, studying the relationship between the Brady Campaign's grading of state gun laws, and the homicide rates and total violent crime rates, of those states. (pdf file, but small).
If Brady's report cards made any sense (that is, if the legal measures it wants enacted, the type of thing that earns an A grade), then there should be some correlation between grades and violent crime and murder rates. The paper concludes that there is no such correlation at all. At each grade level, states' homicide/violence rates range from low to high, and there is no evidence of any correlation between grades and homicide rates at all. A regression analysis indicated that the relation between Brady grade and crime rate was no better than you would get by running random pairs of data, plucking grades and crime rates out of the air.
Logical conclusion: Enactment or failure to enact Brady's legislative priorities had no correlation to murder rates. If a state were to go from F to A, from virtually no gun control to everything on Brady's agenda, the only result would be a joyful press release from Brady.
It is quite interesting to see an advocacy group impeached by its own grading system.
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