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Reconsidering the Donohue-Levitt Hypothesis

4) When we compare arrest rates of people born in the same state, just before and just after abortion legalization, we once again see the identical pattern of lower arrest rates for those born after legalization than before.

3) All of the decline in crime from 1985-1997 experienced by high abortion states relative to low abortion states is concentrated among the age groups born after Roe v. Wade. For people born before abortion legalization, there is no difference in the crime patterns for high abortion and low abortion states, just as the Donohue-Levitt theory predicts.

Donohue and levitt hypothesis | …

Donohue-Levitt Hypothesis: Legal Abortion --> Less …

5) The evidence from Canada, Australia, and Romania also support the hypothesis that abortion reduces crime.

2) After abortion was legalized, the availability of abortions differed dramatically across states. In some states like North Dakota and in parts of the deep South, it was virtually impossible to get an abortion even after Roe v. Wade. If one compares states that had high abortion rates in the mid 1970s to states that had low abortion rates in the mid 1970s, you see the following patterns with crime. For the period from 1973-1988, the two sets of states (high abortion states and low abortion states) have nearly identical crime patterns. Note, that this is a period before the generations exposed to legalized abortion are old enough to do much crime. So this is exactly what the Donohue-Levitt theory predicts. But from the period 1985-1997, when the post Roe cohort is reaching peak crime ages, the high abortion states see a decline in crime of 30% relative to the low abortion states. Our original data ended in 1997. If one updated the study, the results would be similar.)

1) Five states legalized abortion three years before Roe v. Wade. Crime started falling three years earlier in these states, with property crime (done by younger people) falling before violent crime.

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6) Studies have shown a reduction in infanticide, teen age drug use, and teen age childbearing consistent with the theory that abortion will reduce other social ills similar to crime.

These six points all support the hypothesis. There is one fact that, without more careful analysis, argues against the Donohue-Levitt story:

Yep, bet if we rounded up a large population of disadvantaged toddlers and killed them we'd see a big drop in crime as well-doesn't mean it's a good idea. Proof of the idea that abortion is the genocide of poor black people-no wonder the elite in this country are so gung ho about it.

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Reconsidering the Donohue-Levitt Hypothesis - Samuel …

Abortion and Crime: A Review - NBER

The person who wrote that concealed weapons laws reduced crime was John Lott. To see a paper challenging Lott's position, see Duggan (JPE) or a more recent working paper by Phillips (NBER, 2005)As for abortion. Has anyone done this study for England?

Abortion and Crime: A Review ..

I have 3 statistical questions regarding the Abortion Regression.(1) You say in the book that preganancies rose 30% post Roe v. Wade, but births declined 6%. Implying that Abortion is replacing other forms of Birth Control to a large extent. So states with High v. Low abortion rates may not be relevant. A state with a 36% abortion rate could be roughly equivalent to a state with a 6% abortion rate if they did not see the +30% increase. Should you look at (normalized) birth rates not abortions?(2) How are you measuring Crack in the regression? You say in the book that it isn't users it is dealers who commit the crimes. Therfore the relevant measure should not be useage but marginal gain for marginal turf gain. The crash in price is relevant not the level of use.(3) The logic of your paper argues that unwantedness leads to crime. The proxy for this in the bast is children in poverty and single-parent households. I would suggest using a variable for births into poverty and births to unmarried mothers as variables in your regression, so that you can isolate the degree of unwantedness attributeable to abortions. One of Sailer's key criticisms is that post roe v wade abortions possibly led to higher rates of "illegitimacy". So why not include that as a variable? Thanks,Jeff

Does Abortion Really Reduce Crime

To anyone who actually made it this far, I applaud you for your patience. Let me simply end with an analogy. Let’s say that we are living in a world in which global warming is taking place, but also a world in which El Nino occasionally leads to radical, short run disruptions in normal weather patterns. You wouldn’t argue that global warming is false because for a year or two we had cold winters. You’d want to figure out what effect El Nino has on winter weather and then see whether controlling for El Nino it looks like global warming is taking place. The impact of legalized abortion on crime is a lot like global warming — it is slow and steady and grows a little year by year. Crack is like El Nino, it comes in with a fury and then largely disappears. That is why I have invested so much time and effort in understanding both abortion and crack, and why the criticisms made against the abortion-reduces-crime hypothesis to date have not been very compelling.

Oct 26, 2012 · Does Abortion Really Reduce Crime

Now let’s talk about John Lott for a minute. Along with John Whitley, he wrote a paper on abortion and crime. It is so loaded with inaccurate claims, errors and statistical mistakes that I hate to even provide a link to it, but for the sake of completeness you can find it . Virtually nothing in this paper is correct, and it is no coincidence that four years later it remains unpublished. In a letter to the editor at Wall Street Journal, Lott claims that our results are driven by the particular measure of abortions that we used in the first paper. I guess he never bothered to read our in which we show in Table 1 that the results are nearly identical when we use his preferred data source. It is understandable that he could make this argument five years ago, but why would he persist in making it in 2005 when it has been definitively shown to be false? (I’ll let you put on your Freakonomics-thinking-hat and figure out the answer to that last question.) As Lott and Whitley are by now well aware, the statistical results they get in that paper are an artifact of some bizarre choices they made and any reasonable treatment of the data returns our initial results. (Even Ted Joyce, our critic, acknowledges that the basic patterns in the data we report are there, which Lott and Whitley were trying to challenge.)

The central thesis of the Donohue‑Levitt study is a ..

So, what is the final tally? Two of the key assumptions underlying your alternative hypothesis appear to be false: The retreat of crack has not led to an “overshoot” in crime, causing it to be lower than 1985, and even if it had, the states with high abortion rates in the ’70s do not appear to be affected particularly strongly by the crack epidemic. Moreover, when we re-run our analysis controlling for both changes in crime rates from 1985 to 1991 and the level of crime in 1991, the abortion variable comes in just as strongly as in our original analysis.

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