Dozens of readers are offering theories as to why crime rates dropped when they did. One writes:
You asked, "Why have crime rates collapsed so drastically and stayed low even during an historically awful period of unemployment?" Because the newly unemployed do not (yet) come from a place of chronic poverty with few or no alternatives. Because there is a social safety net in place. Because the newly unemployed 55-year-old middle manager isn't prepared culturally, mentally, philosophically or emotionally to turn to crime (yet). And people are staying married because they can't afford to divorce and support 2 households.
Another writes:
I was struck by a gaping whole in the NYT story: The notion that higher unemployment equals higher crime is fine, but where is it held that the two move in equal proportions to one another within a certain time frame? While it seems safe to assume that desperate times lead individuals to desperate measures, it seems far-fetched to suggest that college grads, unable to find jobs, turn quickly to carjacking. Is it too much to say that individuals are more likely to engage in crime only after a long period – perhaps their whole lives – of underprivilege?
If the recession were longer-lasting, or if unemployment levels are sustained, and if optimism and opportunity continue to fail, and if the social safety net supporting many of the nation's indigent were to fray and falter, we might see a surge in crime. But I'm shocked that these criminologists are shocked that crime levels have continued their downward trend.
Another:
Are you aware of Stephen Levitt's theory that legalized abortion is related to the drop in crime? Not saying I agree with it (I don't feel qualified), but it's one argument I've heard to try and close the gap.
Another sends the above video, which fleshes out that popular Freakonomics theory. Another writes:
This is a topic that I've give a lot of thought to, largely because I have lived in New York City for the past decade and am always comparing my experience to that of my parents, who lived through the peak crime years of the 1970s and '80s. To think that I have never felt nearly as fearful of crime is remarkable, and you're correct that there is no simple explanation for such long-term decline. But there is one possible factor I have always come back to: technology. Yes, saying "the Internet changed everything" is an easy way out, I think it has shifted the balance of how crime pays.
Here's one example: I don't feel overly worried about having my wallet stolen. Simply put, because of credit and ATM cards, stealing a wallet or purse isn't as profitable a crime; you won't get much cash, and the chances of you getting anything out of the credit and ATM cards before your victim cancels them is pretty thin (thanks to cell phones). And the Internet has taken up a lot of the crime that was once "on the street" (i.e., drug dealing, gambling and prostitution); crime might not have dropped as dramatically as the numbers suggest, it's just better concealed. And this might even have a positive effect on violent crime, as it diminishes the returns on "turf wars."
Another is on the same page:
Young people devoting time to the activity of surfing the web increasingly take themselves off the street. The advent of online porn has led to the wholesale closure of porn theaters, strip clubs, and massage parlors. These brought young people together in edge areas. Porn on the Internet also provides release without "human" contact. I would note that rape is a crime that has had the greatest decline of all.
The Internet has also provided unbelievable tools to law enforcement, and other advances in technology aided by the Internet I believe are leading to more accurate convictions for crimes. There are fewer in prison, but those that are should be. We are benefiting from a more sedentary, older, and inward looking population then has existed in the past. Just my two cents.
Another two:
The population is aging. That accounts for about 70% of the change in rates of crime, according to the well-known demographer David Foot. Demography is mostly destiny.