In WSJ's Leisure & Arts:
"Back in 1999, Mr. Levitt was trying to figure out why crime rates had fallen so dramatically in the previous decade. He was struck by the fact that crime began falling nationwide just 18 years after the Supreme Court effectively legalized abortion. He was struck harder by the fact that in five states crime began falling three years earlier than it did everywhere else. These were exactly the five states that had legalized abortion three years before Roe v. Wade.
Did crime fall because hundreds of thousands of prospective criminals had been aborted? Once again, the pattern by itself is not conclusive, but once again Mr. Levitt piles pattern on pattern until the evidence overwhelms you. The bottom line? Legalized abortion was the single biggest factor in bringing the crime wave of the 1980s to a screeching halt.
Mr. Levitt repeatedly reminds us that economics is about what is true, not what ought to be true. To this reviewer's considerable delight, he cheerfully violates this principle at the end of the abortion discussion by daring to address the question of whether abortion ought to be legal or, more precisely, whether the effect on crime rates is a sufficient reason to legalize abortion. "
Mr. Landsburg, an economics professor at the University of Rochester, is the author of this book review of "Freakonomics" by Steven Levitt. Dr. Levitt is the most recent winner of the John Bates Clark award for the best economist under the age of 40.