The hypothesis is that abortion causes lower crime rates. Thus, a few or even a single counter-example is enough to invalidate the hypothesis. Data points that

The hypothesis is that abortion causes lower crime rates. Thus, a few or even a single counter-example is enough to invalidate the hypothesis. Data points that confirm the hypothesis doesn't add much new information since these results too could be caused by the same confounding variables that caused the first result (correlation doesn't imply causation). Yes, it was the Soviet union and other Eastern European countries that had liberal abortion laws which they then reversed to spur population growth that I referred to. If Donohue and Levitt's theory were correct, the generation born during the years abortion was legal would be less criminal than following generations.