Mary Oates is a lecturer in economics at Regis College in Weston, Mass. She is an expert on Catholic philanthropy in America.

Naomi Levine is executive director of New York University’s Heyman Center for Philanthropy and Fundraising and is an expert on Jewish philanthropy and nonprofits.

New York University’s Heyman Program for Philanthropy and Fundraising provides professional development training for nonprofit executives, employees and volunteers.

The Center on Wealth and Philanthropy at Boston College, a Jesuit school, examines the relationship between spirituality, wealth and giving. Paul Schervish is director.

The Center on Philanthropy and Public Policy at the University of Southern California conducts research on philanthropy and nonprofits. The center maintains a list of experts on philanthropy, both national and local.

Jennifer McKinney is an associate professor of sociology at Seattle Pacific University. At the 2009 annual meeting of the Society for the Scientific Study of Religion, she made a presentation titled “Real Men Don’t Wear Sweater Vests: Masculinity in an Evangelical Megachurch.”

Gary McIntosh is professor of Christian ministry and leadership at Biola University in La Mirada, Calif. He is also a consultant and the author of 13 books on church growth.

Carson Mencken is a sociology professor at Baylor University in Waco, Texas, and one of the authors of the Baylor Religion Survey released in 2008. He can discuss its findings on megachurches.

Kevin Dougherty is an associate professor of sociology at Baylor University in Waco, Texas. His research focuses on the sociology of religious congregations, including racial diversity in churches.