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I think in Freakonomics a study is cited that claims what actually curbed the rise of crime was a change in abortion laws (rather than the "no broken windows" theory). Not sure if that was one of the things in Freakonomics that was later shown to be false, though.

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yes it has been disputed. See: http://online.wsj.com/public/article/SB113314261192407815-HL...

and http://www.economist.com/node/5246700?story_id=5246700

Thanks for those. The dispute has an interesting source:

"In other words, Messrs Donohue and Levitt did not run the test they thought they had—an “inadvertent but serious computer programming error”, according to Messrs Foote and Goetz"

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