Chicago Tribune, December 25, 2011 by Steve Chapman
http://www.chicagotribune.com/news/columnists/ct-oped-1225-chapman-20111225,0,152834.column
In fact, as University of California at Berkeley law professor Franklin Zimring notes in his book “The Great American Crime Decline,” births to unwed teens didn’t fall after the abortion decision they rose. “There were no visible signs of changes in the demography of births to match the theories,” he writes.