Robert Agnew is Professor of Sociology at Emory University and a fellow of the American Society of Criminology. He is author of Pressured Into Crime: An Overview of General Strain Theory (OUP, 2006) and Why Do They Do It? A General Theory of Crime and Delinquency (OUP, 2005) and coeditor, with Francis T. Cullen, of Criminological Theory: Past to Present (OUP, 2005).