The theory: legal abortion is preventing would-be criminals from being born

Case: If you have heard about FreeQuonomics, you know this. A child born in 1973 when the crime rate began to decline in 1994 is 21 years old, and a child born in 1973 is Roe v. It was because I was legally aborted again after Wade. This is a very attractive argument for those who hate obvious answers. Interestingly, this is one of the few theories on the list and has received strong empirical support from other countries. Research in Romania also found the same effect.

The opposite case: Abortion theory has two major problems. One of them is that even if abortion is legalized, the abortion will not change suddenly from 0 to 60. Roe v. Prior to Wade, illegal abortion was still being done, but after choosing many people have chosen not to accept yet. There is also a supply problem: "This is not like Roy vs. Wade's decision, suddenly there are millions of places where you can get abortions," said John Roman of the City Institute.

The second problem is age. In the 1990's, the crime rate came not only among people born after 1973. It simultaneously falls to a group of age. There is evidence that the juvenile crime rate affects the crime rate of the elderly, but this does not mean that in 1994 21-year-old people have sufficient power to repress people for 10 years.

This theory also assumes abortion, but this is not necessarily true. The implicit premise of abortion theory is that abortion inevitably prevents unnecessary children and unintended children have to commit more crimes. These are hypotheses that have not been confirmed

Conclusion: There was a possibility that there was some influence in the 1990s. As with many of these theories there is support for abortion that reduced crime somewhat in the 1990s. However, even after Roe v. Wade generation exceeded the main age of crime, abortion continued to decline as crime could not explain the reasons that took place in the 21st century (detailed abortion data was sufficient Because it is not). It has been decreasing for the first 15 years

In the economics of devil, we have found a lacking factor: legalization of abortion in the early 1970s. This theory is harsh but simple. Rising the abortion rate means that fewer children will be born. In other words, increasing the number of children growing up in this difficult environment increases the possibility of crime. Interestingly, our argument did not produce too much dislikes. why? The reader is wise enough to understand that abortion is a mechanism of declining crime rate and it is recognized that it is not a real root cause. What is the root cause? To put it briefly, too many children grew up in a harsh environment, causing crimes. First maturity of adults after abortion including children raised in this environment

Satan economists Steven Levitt and Steven Dubner believe that the declining crime rate is due to the legitimization of abortion in the 1970s. Meanwhile, Malcolm Gladwell provides another interpretation in his book "Tipping Point", claiming that the crime is "epidemic" and is sufficient to "confirm" the balance with a slight contraction of the police Did. . Another theory is that extensive exposure to lead contamination in automotive exhaust gas reduces intelligence, increases attack level, causes early waves of crime in the middle of the 20th century, is most severe in busy cities such as New York It has an impact. After the removal of lead from US gasoline in the 1970s, a strong correlation was found indicating that violent crime rates in New York and other major cities began to decline.