Nicholas Carnagey is visiting professor of psychology at Wake Forest University in Winston-Salem, N.C., and co-author of the chapter “Violent Evil and the General Aggression Model” in The Social Psychology of Good and Evil.

Heidi Unruh is director of the Congregations, Community Outreach and Leadership Development Project and staff associate with Evangelicals for Social Action. She is co-editor of Hope for Children in Poverty: Profiles and Possibilities and co-author of Saving Souls, Serving Society: Understanding the Faith Factor in Church-Based Social Ministries. She lives in Hutchison, Kan.

Sung Hee Kim is an associate professor of psychology and a member of the social psychology core group at the University of Kentucky in Lexington. Her research interests include conflict, group processes and vengeance.

Laura Lein is dean of the University of Michigan School of Social Work and Collegiate Professor of Social Work. She is an expert on poverty and the author of many studies of families in poverty, including Katrina evacuees and people living on the Texas-Mexico border. She co-authored Life After Welfare: Reform and the Persistence of Poverty (2007).

Craig Anderson is a psychology professor at Iowa State University in Ames and co-author of “Violent Evil and the General Aggression Model” in The Social Psychology of Good and Evil. 

Robert Haveman is professor emeritus of economics at the University of Wisconsin at Madison and co-author of Understanding Poverty.

Scott W. Allard is an associate professor in the University of Chicago’s School of Social Service Administration. He is the author of Out of Reach: Place, Poverty and the New American Welfare State. His research focuses on social welfare policy, poverty and nonprofit organizations in the United States.

Jack Glaser is a social psychologist and assistant professor of public policy at the Goldman School of Public Policy at the University of California-Berkeley. He studies the social psychology of hate crimes and intergroup violence.

Ruby K. Payne is an author, educator and speaker with a focus on poverty and economic class differences. She is the author of A Framework for Understanding Poverty. She is founder and CEO of aha! Process in Highlands, Texas.